0001193125-21-291578 | S-1/A | XBRL Viewer | Greenidge Generation Holdings INC

Cover Page	6 Months Ended
Cover Page	Jun. 30, 2021
Cover [Abstract]
Document Type	S-1/A
Amendment Flag	true
Entity Registrant Name	GREENIDGE GENERATION HOLDINGS INC.
Entity Central Index Key	0001844971
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Amendment Description	We are filing this pre-effective Amendment No. 1 to our registration statement on Form S-1, initially filed on September 20, 2021 (File No. 333-259678) (the “Registration Statement”) to reflect recent material developments, fix clerical errors in the Registration Statement and to file Exhibits 1.1, 4.1, 4.2, 4.3 and 5.1, with respect to such Registration Statement.

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020	Dec. 31, 2019
CURRENT ASSETS:
Cash and cash equivalents	$ 37,890	$ 5,052	$ 11,750
Digital assets	222	254	269
Accounts receivable	369	390	10
Fuel deposits	1,297	808	164
Prepaid expenses	1,967	155	96
Emissions credits	981	1,923	559
Carbon offset credits	684
Miner equipment deposits	16,523	5,959	6,337
Total current assets	59,933	14,541	19,185
LONG-TERM ASSETS:
Property and equipment, net	67,346	50,686	37,064
Project deposit		74	510
Right-of-use assets, net	1,310
Other assets		74	85
Other long-term assets	98	148
Total assets	128,687	65,375	56,844
CURRENT LIABILITIES:
Accounts payable	1,650	1,745	2,339
Natural gas payable	1,088	935	18
Accrued emissions expense	814	2,082	105
Income taxes payable	1,567
Accrued expenses	3,226	547	150
Accrued interest expense —related party		20	396
Deferred revenue	40	272
Note payable, current portion	11,499	3,273
Notes payable—related party		3,573	5,000
Finance lease obligation, current portion	570
Total current liabilities	20,454	12,447	8,008
LONG-TERM LIABILITIES:
Deferred tax liability	482
Notes payable, net of current portion	7,064	1,364
Finance lease obligation, net of current portion	409
Asset retirement obligations	2,345	2,277	2,135
Environmental trust liability	4,994	4,927	4,697
Accrued emissions expense, net of current portion			302
Accrued interest expense—related party, net of current portion			278
Notes payable—related party, net of current portion			7,700
Total liabilities	35,748	21,015	23,120
COMMITMENTS AND CONTINGENCIES (NOTE 11)
STOCKHOLDERS' EQUITY:
Preferred stock	1
Common stock	3
Additional paid-in capital	113,054
Members' capital		69,276	54,074
Accumulated deficit	(20,119)	(24,916)	(20,350)
Total stockholders' equity	92,939	44,360	33,724
Total liabilities and stockholders' equity	$ 128,687	$ 65,375	$ 56,844

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020	Dec. 31, 2019
Property and equipment, net of accumulated depreciation	$ 11,756	$ 8,986	$ 4,422
Preferred stock, Par or stated value per share	$ 0.0001	$ 0.0001
Preferred stock, Shares authorized	20,000,000	0
Preferred stock, Shares issued	1,620,000	0
Preferred stock, Shares outstanding	1,620,000	0
Common stock, Par or stated value per share	$ 0.0001	$ 0.0001
Common stock, Shares authorized	500,000,000	0
Common stock, Shares issued	28,320,000	0
Common stock, Shares outstanding	28,320,000	0
Members capital, Outstanding units	0	49,978	39,978

Condensed Consolidated Statements Of Operations And Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
REVENUE:
Total revenue	$ 16,176	$ 4,672	$ 27,239	$ 7,814	$ 20,114	$ 4,439
OPERATING COSTS AND EXPENSES
Selling, general, and administrative expenses	4,565	1,189	8,060	2,638	5,581	5,833
Depreciation and amortization	1,603	1,130	2,864	2,163	4,564	1,679
Total operating costs and expenses	10,892	4,901	20,070	9,410
Income (loss) from operations	5,284	(229)	7,169	(1,596)	(2,631)	(7,973)
OTHER INCOME (EXPENSE), NET:
Impairment loss on digital assets						(100)
Interest expense	(202)		(368)		(91)
Interest expense—related party		(273)	(22)	(540)	(573)	(673)
Loss (gain) on sale of digital assets	(154)	(44)	141	(25)	123
Gain (loss) on environmental trust liability					(230)	241
Other (expense) income, net	(13)	(25)	6	(16)	112	30
Total other expense, net	(369)	(342)	(243)	(581)	(659)	(502)
INCOME (LOSS) BEFORE INCOME TAXES	4,915	(571)	6,926	(2,177)
Provision for income taxes	(1,397)		(2,129)		0	0
NET INCOME (LOSS) AND TOTAL COMPREHENSIVE INCOME (LOSS)	$ 3,518	(571)	$ 4,797	(2,177)	(3,290)	(8,475)
Earnings per share:
Basic	$ 0.10		$ 0.15
Diluted	$ 0.08		$ 0.12
Cryptocurrency Mining [Member]
REVENUE:
Total revenue	$ 14,064	3,341	$ 23,061	5,630	13,016	410
OPERATING COSTS AND EXPENSES
Cost of revenue	2,754	1,362	5,150	1,939	4,465	94
Power and Capacity [Member]
REVENUE:
Total revenue	2,112	1,331	4,178	2,184	7,098	4,029
OPERATING COSTS AND EXPENSES
Cost of revenue	$ 1,970	$ 1,220	$ 3,996	$ 2,670	$ 8,135	$ 4,806

Condensed Consolidated Statements Of Stockholders' Equity - USD ($) $ in Thousands	Total	Limited Liability Company Common Unit	Limited Liability Company Preferred Unit	Limited Liability Company Senior priority Unit	Member Units	Accumulated Deficit	Common Stock	Preferred Stock	Additional Paid-in Capital
Common Units - Beginning Balance (Shares) at Dec. 31, 2018		750		0
Preferred Units - Beginning Balance (Shares) at Dec. 31, 2018			39,228
Beginning Balance member capital at Dec. 31, 2018			$ 39,074		$ 39,074
Balance at Beginning of Period at Dec. 31, 2018	$ 27,199					$ (11,875)
Proceeds from sale of Greenidge Coin, LLC preferred units (Shares)			15,000
Proceeds from sale of Greenidge Coin, LLC preferred units	15,000		$ 15,000		15,000
Net income (loss)	$ (8,475)					(8,475)
Common Units - Ending Balance (Shares) at Dec. 31, 2019	750	750		0
Preferred Units - Ending Balance (Shares) at Dec. 31, 2019			54,228
Ending Balance member capital at Dec. 31, 2019	$ 54,074		$ 54,074		54,074
Balance at End of Period at Dec. 31, 2019	33,724					(20,350)
Net income (loss)	(1,606)					(1,606)
Common Units - Ending Balance (Shares) at Mar. 31, 2020		750
Preferred Units - Ending Balance (Shares) at Mar. 31, 2020			54,228
Ending Balance member capital at Mar. 31, 2020			$ 54,074		54,074
Balance at End of Period at Mar. 31, 2020	$ 32,118					(21,956)
Common Units - Beginning Balance (Shares) at Dec. 31, 2019	750	750		0
Preferred Units - Beginning Balance (Shares) at Dec. 31, 2019			54,228
Beginning Balance member capital at Dec. 31, 2019	$ 54,074		$ 54,074		54,074
Balance at Beginning of Period at Dec. 31, 2019	33,724					(20,350)
Net income (loss)	(2,177)
Common Units - Ending Balance (Shares) at Jun. 30, 2020		750
Preferred Units - Ending Balance (Shares) at Jun. 30, 2020			54,228
Ending Balance member capital at Jun. 30, 2020			$ 54,074		54,074
Balance at End of Period at Jun. 30, 2020	$ 31,547					(22,527)
Common Units - Beginning Balance (Shares) at Dec. 31, 2019	750	750		0
Preferred Units - Beginning Balance (Shares) at Dec. 31, 2019			54,228
Beginning Balance member capital at Dec. 31, 2019	$ 54,074		$ 54,074		54,074
Balance at Beginning of Period at Dec. 31, 2019	33,724					(20,350)
Conversion of notes payable to senior priority units—tranche 1 (Shares)				10,000
Conversion of notes payable to senior priority units—tranche 1	13,926			$ 13,926	13,926
Deemed distribution of Greenidge Coin, LLC preferred units			$ 1,276		1,276	(1,276)
Contribution of GGH Common Units for GGHI Common Stock (Shares)			(15,000)
Contribution of GGH Common Units for GGHI Common Stock			$ (16,276)	$ 16,276
Net income (loss)	$ (3,290)					(3,290)
Common Units - Ending Balance (Shares) at Dec. 31, 2020	750	750		10,000
Preferred Units - Ending Balance (Shares) at Dec. 31, 2020			39,228
Ending Balance member capital at Dec. 31, 2020	$ 69,276		$ 39,074	$ 30,202	69,276
Balance at End of Period at Dec. 31, 2020	44,360					(24,916)
Common Units - Beginning Balance (Shares) at Mar. 31, 2020		750
Preferred Units - Beginning Balance (Shares) at Mar. 31, 2020			54,228
Beginning Balance member capital at Mar. 31, 2020			$ 54,074		54,074
Balance at Beginning of Period at Mar. 31, 2020	32,118					(21,956)
Net income (loss)	(571)					(571)
Common Units - Ending Balance (Shares) at Jun. 30, 2020		750
Preferred Units - Ending Balance (Shares) at Jun. 30, 2020			54,228
Ending Balance member capital at Jun. 30, 2020			$ 54,074		54,074
Balance at End of Period at Jun. 30, 2020	$ 31,547					(22,527)
Common Units - Beginning Balance (Shares) at Dec. 31, 2020	750	750		10,000
Preferred Units - Beginning Balance (Shares) at Dec. 31, 2020			39,228
Beginning Balance member capital at Dec. 31, 2020	$ 69,276		$ 39,074	$ 30,202	69,276
Balance at Beginning of Period at Dec. 31, 2020	44,360					(24,916)
Contribution of Preferred Units, Senior Priority Units, and notes payable to related party for GGHI Common Stock (shares)			(39,228)	(10,000)			26,800,300
Contribution of Preferred Units, Senior Priority Units, and notes payable to related party for GGHI Common Stock	3,615		$ (39,074)	$ (30,202)	(69,276)		$ 3		$ 72,888
Contribution of GGH Common Units for GGHI Common Stock (Shares)		(750)					1,199,700
Proceeds from issuance of preferred stock, net of stock issuance costs (shares)								1,620,000
Proceeds from issuance of preferred stock, net of stock issuance costs	37,112							$ 1	37,112
Stock-based compensation expense	656								656
Proceeds from stock options exercised (shares)							160,000
Proceeds from stock options exercised	1,000								1,000
Stock issued to purchase miners (shares)							160,000
Stock issued to purchase miners	991								991
Net income (loss)	1,279					1,279
Balance at End of Period (shares) at Mar. 31, 2021							28,320,000	1,620,000
Balance at End of Period at Mar. 31, 2021	$ 89,014					(23,637)	$ 3	$ 1	112,647
Common Units - Beginning Balance (Shares) at Dec. 31, 2020	750	750		10,000
Preferred Units - Beginning Balance (Shares) at Dec. 31, 2020			39,228
Beginning Balance member capital at Dec. 31, 2020	$ 69,276		$ 39,074	$ 30,202	$ 69,276
Balance at Beginning of Period at Dec. 31, 2020	44,360					(24,916)
Net income (loss)	4,797
Balance at End of Period (shares) at Jun. 30, 2021							28,320,000	1,620,000
Balance at End of Period at Jun. 30, 2021	92,939					(20,119)	$ 3	$ 1	113,054
Balance at Beginning of Period at Mar. 31, 2021	89,014					(23,637)	$ 3	$ 1	112,647
Stock-based compensation expense	407								407
Net income (loss)	3,518					3,518
Balance at End of Period (shares) at Jun. 30, 2021							28,320,000	1,620,000
Balance at End of Period at Jun. 30, 2021	$ 92,939					$ (20,119)	$ 3	$ 1	$ 113,054

Condensed Consolidated Statements Of Stockholders' Equity (Parenthetical) $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($)
Preferred Stock
Payment of stock issuance costs	$ 3,387

Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
CASH FLOW FROM OPERATING ACTIVITIES:
Net income (loss)	$ 4,797	$ (2,177)	$ (3,290)	$ (8,475)
Adjustments to reconcile net income (loss) to net cash flow from operating activities:
Depreciation and amortization	2,864	2,163	4,564	1,679
Deferred income taxes	482
Accretion of asset retirement obligations	68	74	142
(Loss) gain on sale of digital assets	(141)	25	(123)
Stock-based compensation expense	1,063
Loss on environmental trust liability	67
Loss (gain) on environmental trust liability			230	(241)
Impairment loss on digital assets				100
Changes in operating assets and liabilities:
Accounts receivable	21	10	(380)	4
Emissions credits/carbon offsets	258	3
Prepaids and other assets	(2,129)	(1,458)
Accounts payable	(870)	(190)	(1,714)	(164)
Income taxes payable	1,567
Accrued emissions	(1,268)	473	1,675	407
Accrued expenses	2,623	1,772	397	(118)
Digital assets			(649)	(369)
Fuel deposits			(644)	128
Prepaid expenses			(59)	38
Emissions credits			(1,364)	(560)
Other assets			11	(10)
Natural gas payable			917	7
Accrued interest expense—related party			572	673
Deferred revenue			272
Net cash flow from operating activities	9,402	695	557	(6,901)
CASH FLOW FROM INVESTING ACTIVITIES:
Purchases of property and equipment	(19,068)	(9,340)	(4,596)	(3,458)
Deposits on miner equipment	(10,564)		(5,959)	(6,337)
Project deposit	51	427		41
Net cash flow from investing activities	(29,581)	(8,913)	(10,555)	(9,754)
CASH FLOW FROM FINANCING ACTIVITIES:
Proceeds from issuance of preferred stock, net of issuance costs	37,112
Proceeds from stock options exercised	1,000
Proceeds from notes payable	15,686
Principal payments on notes payable	(1,760)		(273)
Proceeds from finance lease obligations	1,404
Repayments of capital lease obligations	(425)
Proceeds from sale of Greenidge Coin, LLC preferred units				15,000
Borrowings on notes payable—related party			3,573	12,700
Net cash flow from financing activities	53,017		3,300	27,700
CHANGE IN CASH AND CASH EQUIVALENTS	32,838	(8,218)	(6,698)	11,045
CASH AND CASH EQUIVALENTS—beginning of year	5,052	11,750	11,750	705
CASH AND CASH EQUIVALENTS—end of year	$ 37,890	$ 3,532	5,052	11,750
SUPPLEMENTAL DISCLOSURES: CASH PAID FOR INTEREST			85
NON-CASH INVESTING AND FINANCING TRANSACTIONS:
Miner deposits moved into property and equipment			6,337
Project deposits moved into property and equipment			436
Property and equipment purchases financed with note payable			4,910
Property and equipment purchases in accounts payable			1,120	1,539
Property and equipment purchased with digital assets			787
Initial recognition of asset retirement obligations				$ 2,135
Notes payable principal converted to members' equity			12,700
Notes payable accrued interest converted to members' equity			1,226
Deemed distribution of Greenidge Coin, LLC preferred units			1,276
Contribution of Greenidge Coin, LLC preferred units			$ 15,000

ORGANIZATION AND DESCRIPTION OF BUSINESS

6 Months Ended

12 Months Ended

Jun. 30, 2021

Dec. 31, 2020

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization and Description of Business

ORGANIZATION AND DESCRIPTION OF BUSINESS

Greenidge Generation Holdings Inc. (“Greenidge”) and Subsidiaries (collectively, the “Company”) owns and operates a vertically integrated bitcoin mining and power facility located in Dresden, New York. The Company’s bitcoin mining capacity generates revenue in the form of bitcoin and U.S. dollars by earning bitcoin with

application-specific

integrated circuit computers (“ASICs” or “miners”) that are owned by the Company as rewards and transaction fees for supporting the global bitcoin network. Additionally, the Company generates revenues in U.S. dollars to a lesser extent from third parties for hosting and maintaining their ASICs. The Company also sells surplus electricity generated by its power plant, and not consumed in bitcoin mining operations, to the New York Independent System Operator (“NYISO”) power grid at prices set on a daily basis through the NYISO wholesale market. In addition, the Company receives revenues from the sale of its capacity and ancillary services in the NYISO wholesale market. The consolidated financial statements include the accounts of the following entities:

•

Greenidge (a Delaware corporation). Greenidge was formed in 2021 to oversee and manage the following entities:

•

Greenidge Generation Blocker Inc. (“GGB”), a Delaware corporation and a wholly owned subsidiary of Greenidge

•

Greenidge Generation Holdings LLC (“GGH”), a Delaware limited liability company and a wholly owned subsidiary of Greenidge

•

Greenidge Generation, LLC (“GG”), a New York limited liability company and a wholly owned subsidiary of Greenidge

•

Lockwood Hills, LLC (“LH”), a New York limited liability company and a wholly owned subsidiary of Greenidge

•

Greenidge Solar, LLC (“GS”), a Delaware limited liability company and a wholly owned subsidiary of Greenidge

•

Greenidge Pipeline, LLC (“GP”), a Delaware limited liability company and a wholly owned subsidiary of Greenidge

•

Greenidge Pipeline Properties Corporation (“GPP”), a New York Corporation and a wholly owned subsidiary of Greenidge

•

Greenidge Markets and Trading, LLC (“GMT”), a Delaware limited liability company and a wholly owned subsidiary of Greenidge

•

Greenidge Secured Lending, LLC (“SL”), a Delaware limited liability company and a wholly owned subsidiary of Greenidge

•

Greenidge Blocker Corp. (“Blocker”), a Delaware corporation and a consolidated variable interest entity

•

Greenidge Coin, LLC (“GC”), a Delaware limited liability company and a wholly owned subsidiary of Greenidge. In January 2021, GC merged into GG and GC was subsequently dissolved.

Variable Interest Entities

The Company evaluates its interests in variable interest entities (“VIE”) and will consolidate any VIE in which it has a controlling financial interest and is deemed to be the primary beneficiary. A controlling financial interest has both of the following characteristics: (1) the power to direct the activities of the VIE that most significantly impact its economic performance; and (2) the obligation to absorb losses of the VIE that could potentially be significant to the VIE or the right to receive benefits from the VIE that could be significant to the VIE. If both characteristics are met, the Company considers itself to be the primary beneficiary and therefore will consolidate that VIE into its consolidated financial statements.

Consolidation of a Variable Interest Entity

On October 2, 2019, Blocker, a related entity through common ownership, purchased 15,000 preferred units of GC for $15,000. Blocker was formed for the sole purpose of making a capital investment into GC so that GC could then provide a loan to GGH. The purpose of the loan from GC to GGH was to fund the development of infrastructure necessary for the Company to commence its Bitcoin mining operations.

Accordingly, Blocker is deemed a VIE because Blocker’s operations consist of its investment in GC and consequently, Blocker relies on the operations of the Company to sustain future operating expenses. The Company is deemed the primary beneficiary of the VIE because it is the sole provider of financial support. Accordingly, as of October 2, 2019, the Company consolidated Blocker’s balance sheet and results of operations. On December 31, 2020, Blocker entered into a liquidating distribution agreement with GGH, effectively dissolving Blocker into GGH.

Plan of Merger

On March 19, 2021, the Company entered into a definitive agreement and plan of merger for a business combination with Support.com, Inc., a Delaware corporation (NASDAQ: SPRT).

ORGANIZATION AND DESCRIPTION OF BUSINESS

Greenidge Generation Holdings LLC and Subsidiaries (collectively, the “Company”) owns and operates a vertically integrated bitcoin mining and power generation facility located in Upstate, New York. The Company’s bitcoin mining capacity generates revenue in the form of bitcoin and U.S. dollars by earning bitcoin with application-specific integrated circuit computers (“ASICs” or “miners”) that are owned by the Company as rewards and transaction fees for supporting the global bitcoin network. Additionally, the Company generates revenues in U.S. dollars to a lesser extent from third parties for hosting and maintaining their ASICs. The Company also sells surplus electricity generated by its power plant, and not consumed in bitcoin mining operations, to New York State’s power grid at prices set on a daily basis through the NYISO wholesale market. In addition, Greenidge receives revenues from the sale of its capacity and ancillary services in the NYISO wholesale market. The consolidated financial statements include the accounts of the following entities:

•

Greenidge Generation Holdings LLC (“GGH”, a Delaware limited liability company). GGH was formed in 2014 to oversee and manage the following entities:

•

Greenidge Generation LLC (“GG”, a New York limited liability company, wholly-owned subsidiary of GGH);

•

Lockwood Hills LLC (“LH”, a New York limited liability company, wholly-owned subsidiary of GGH);

•

Greenidge Solar LLC (“GS”, a Delaware limited liability company, wholly-owned subsidiary of GGH);

•

Greenidge Pipeline LLC (“GP”, a Delaware limited liability company, wholly-owned subsidiary of GGH);

•

Greenidge Pipeline Properties Corporation (“GPP”, a New York Corporation, wholly-owned subsidiary of GGH);

•

Greenidge Markets and Trading LLC (“GMT”, a Delaware limited liability company, wholly-owned subsidiary of GGH);

•

Greenidge Secured Lending LLC (“SL”, a Delaware limited liability company, wholly-owned subsidiary of GGH);

•

Greenidge Blocker Corp. (“Blocker”, a Delaware corporation, consolidated variable interest entity); and

•

Greenidge Coin, LLC (“GC”, a Delaware limited liability company, wholly-owned subsidiary of GGH).

Variable Interest Entities

The Company evaluates its interests in variable interest entities (“VIE”) and will consolidate any VIE in which it has a controlling financial interest and is deemed to be the primary beneficiary. A controlling financial interest has both of the following characteristics: (1) the power to direct the activities of the VIE that most significantly impact its economic performance; and (2) the obligation to absorb losses of the VIE that could potentially be significant to the VIE or the right to receive benefits from the VIE that could be significant to the VIE. If both of the characteristics are met, the Company considers itself to be the primary beneficiary and therefore will consolidate that VIE into its consolidated financial statements.

Consolidation of a Variable Interest Entity

On October 2, 2019, Greenidge Blocker Corp. (“Blocker”), a related entity through common ownership, purchased 15,000 preferred units of Greenidge Coin (“GC”) for $15,000. Blocker was formed for the sole purpose of making a capital investment into GC so that GC could then provide a loan to GGH. The purpose of the loan from GC to GGH was to fund the development of infrastructure necessary for the Company to commence its Bitcoin mining operations.

deemed the primary beneficiary of the VIE because it is the sole provider of financial support. Accordingly, as of October 2, 2019 the Company consolidated Blocker’s balance sheet and results of operations. On December 31, 2020, Blocker entered into a liquidating distribution agreement with GGH, effectively dissolving Blocker into GGH.

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

6 Months Ended

12 Months Ended

Jun. 30, 2021

Dec. 31, 2020

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation and Principles of Consolidation

The accompanying unaudited interim condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial information. In the opinion of management, the accompanying unaudited condensed interim consolidated financial statements reflect all adjustments, consisting of normal recurring adjusting, considered necessary for a fair presentation of such interim results.

Greenidge is the successor entity for accounting purposes to GGH as a result of the corporate restructuring consummated in January 2021. Pursuant to this restructuring, Greenidge was incorporated in the State of Delaware on January 27, 2021 and on January 29, 2021, entered into an asset contribution and exchange agreement with the owners of GGH, pursuant to which Greenidge acquired all of the ownership interests in GGH in exchange for 7,000,000 shares of Greenidge’s common stock (28,000,000 shares of GGHI Class B Common Stock after the

4-for-1

split in March 2021). As a result of this transaction, GGH became a wholly-owned subsidiary of Greenidge. The financial information presented herein are that of GGH for the periods before January 29, 2021 and Greenidge for the period after January 29, 2021.

The results for the unaudited condensed interim consolidated statements of operations are not necessarily indicative of results to be expected for the year ending December 31, 2021 or for any future interim period. The unaudited condensed interim consolidated financial statements do not include all of the information and notes required by U.S. GAAP for complete financial statements. The accompanying unaudited condensed interim consolidated financial statements should be read in conjunction with the consolidated financial statements for the year ended December 31, 2020 and notes thereto.

The consolidated financial statements include the accounts of the Company and its subsidiaries as described in Note 1. All significant intercompany accounts and transactions have been eliminated.

Use of estimates

The preparation of consolidated financial statements in conformity with generally accepted accounting principles requires management to make estimates, judgments and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and notes thereto. Actual results could differ from those estimates.

Significant Accounting

Policies

For a detailed discussion about the Company’s significant accounting policies, see the Company’s December 31, 2020 consolidated financial statements.

Emissions Expense and Credits

The Company generates carbon dioxide emissions. As a result, the Company incurs emissions expense and is required to purchase emission credits, which are valued at cost, to offset the liability. The Company participates in the Regional Greenhouse Gas Initiative (“RGGI”), which requires, by law, that the Company remit credits to offset 50% of the Company’s annual emission expense in the following year, for each of the years in the three year control period (January 1, 2018 to December 31, 2020). In February 2021, the Company settled the emissions allowance for the control period. The Company continues to remit credits in accordance with RGGI. The Company recognizes expense on a per ton basis, where one ton is equal to one RGGI credit.

The RGGI credits are recorded on a first in, first out (“FIFO”) basis. The Company incurred emissions expense of $402 and $815 for the three and six months ended June 30, 2021, respectively, and $309 and $473 for the three and six months ended June 30, 2020, respectively, which is included in power and capacity cost of revenue in the accompanying condensed consolidated statements of operations.

Carbon Offset Credits

The Company announced that effective June 1, 2021, it will operate an entirely carbon neutral bitcoin mining operation at its facility in Dresden, New York. The Company plans to purchase voluntary carbon offsets from a portfolio of U.S. greenhouse gas reduction projects as one method to achieve this carbon neutrality. During the second quarter of 2021, the Company purchased

$684 of voluntary carbon offset credits. The voluntary carbon offset credits will be expensed to cost of revenues on a specific identification basis when the Company applies it to its net zero goals, which is when the credits are surrendered to the applicable agency.

Asset Retirement Obligations

Asset retirement obligations are legal obligations associated with the retirement of long-lived assets. The obligations represent the present value of the estimated costs for an asset’s future retirement discounted using a credit-adjusted risk-free rate, and are recorded in the period in which the liability is incurred. The liabilities recognized relate to the decommissioning of a coal ash pond for coal combustion residuals (“CCR”), which are subject to Federal and State regulations

In accordance with Federal law and Accounting Standards Codification (“ASC”)

410-20,

Asset Retirement Obligations, the Company recorded an asset retirement obligation of $2,345 and $2,277 at June 30, 2021 and December 31, 2020, respectively. The company expensed $35 and $32

to other income (expense), net during the three months ended June 30, 2021 and 2020, respectively for the accretion of interest for the liability and $68 and $74 during the six months ended June 30, 2021 and 2020, respectively. There were no changes to cash flow estimates related to the coal ash pond asset retirement obligation during the three and six months ended June 30, 2021 or 2020. Estimates are based on various assumptions including, but not limited to, closure cost estimates, timing of expenditures, escalation factors, discount rate

of 5.00

% and methods for complying with CCR regulations. Additional adjustments to the asset retirement obligations are expected periodically due to potential changes in estimates and assumptions.

Environmental Trust Liability

The trust is designed

to provide funds for 30 years of expenses to maintain a landfill once it is full and has no further source of revenue or in case the owner is defunct and the NYSDEC has to operate the landfill. The landfill is a fully permitted, operational landfill and also acts as a leachate treatment facility. An annual report is completed by a third-party engineering firm to provide environmental compliance and calculate combined closure and post-closure costs, discounted to current year dollars using a discount rate of 4.50

%. In lieu of a trust, the Company has negotiated with its largest equity member to maintain a letter of credit guaranteeing the payment of the liability (see Note 6). In accordance with ASC

410-20,

the Company has recorded an environmental liability of

$4,994 and $4,927 at June 30, 2021 and December 31, 2020, respectively. The letter of credit related to this liability was for $4,994 at June 30, 2021 (see Note 6).

Leases

On January 1, 2021, the Company adopted Accounting Standards Codification (“ASC”) 842, Leases. No lease arrangements were in place as of January 1, 2021. Following guidance in ASC 842, arrangements meeting the definition of a lease are classified as operating or financing leases and are recorded on the condensed consolidated balance sheet.

Right-of-use

(“ROU”) assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent an obligation to make lease payments arising from the lease. ROU assets and lease liabilities are recognized at the lease commencement date based on the present value of lease payments over the lease term at the rate implicit in the lease or the Company’s incremental borrowing rate. The ROU asset is amortized over the lease term. Variable lease expenses, if any, are recorded when incurred.

In calculating the ROU asset and related lease liability, the Company elected to combine lease and

non-lease

components. The Company excluded short-term leases having initial terms of 12 months or less from the new guidance as an accounting policy election and recognizes rent expense on a straight-line basis over the lease term. Refer to Note 5 for the additional disclosures required by ASC 842.

Cryptocurrency Mining Cost of Revenue

Cost of revenue—cryptocurrency mining consists primarily of natural gas, emissions, payroll and benefits and other direct production costs associated with the megawatts generated for the digital mining operation. Cost of revenue—cryptocurrency mining does not include depreciation and amortization.

Power and Capacity Cost of Revenue

Cost of revenue—power and capacity consists primarily of natural gas, emissions, payroll and benefits and other direct production costs associated with the megawatts generated for the power produced by Greenidge and sold to the grid. Cost of revenue—power and capacity does not include depreciation and amortization.

Selling, General, and Administrative Expenses

Selling, general and administrative expenses consist primarily of administrative payroll and benefits, business development costs, professional fees, and insurance.

Stock-Based Compensation

The Company accounts for share-based payment awards exchanged for services at the estimated grant date fair value of the award. Stock options issued under the Company’s equity incentive plans are granted with an exercise price equal to no less than the market price of the Company’s stock at the date of grant and expire up to

ten years from the date of the grants. These options generally vest on the grant date or over a three year

period

The Company estimates the fair value

of the stock options grants using the Black-Scholes-Merton option pricing model and the assumptions used in calculating the fair value of stock-based awards represent management’s best estimates and involve inherent uncertainties and the application of management’s judgement.

Expected Term

—The expected term of options represents the period that the Company’s stock-based awards are expected to be outstanding on the simplified method, which is the half-life from vesting to the end of its contractual term.

Expected Volatility

—The Company computes stock price volatility over expected terms based on reasonable estimates and comparable public companies as the Company had no trading history of its own common stock.

Risk-Free Interest Rate

—The Company bases the risk-free interest rate on the implied yield available on U.S. Treasury

zero-coupon

issues with an equivalent remaining term.

Expected Dividend

—The Company has never declared or paid any cash dividends on its common shares and does not plan to pay cash dividends in the foreseeable future, and, therefore, uses an expected dividend yield of zero in its valuation models.

Income Taxes

Prior to the formation of Greenidge on January 27, 2021, the Company was treated as a partnership for federal and state income tax purposes. Pursuant to this election, the profit or loss of the Company is reported in the individual income tax returns of the members. Therefore, no provision for Federal or State taxes has been made for the year ended December 31, 2020.

Subsequent to the conversion of GGH to Greenidge, the Company calculates the provision for income taxes in accordance with ASC 740, Income Taxes, (“ASC 740”). The current provision for income taxes represents actual or estimated amounts payable or refundable on tax return filings each year. Deferred tax assets and liabilities are recorded for the estimated future tax effects of temporary differences between the tax basis of assets and liabilities and amounts reported in the accompanying consolidated balance sheets, and for operating loss and tax credit carryforwards. The change in deferred tax assets and liabilities for the period measures the deferred tax provision or benefit for the period. Effects of changes in enacted tax laws on deferred tax assets and liabilities are reflected as adjustments to the tax provision or benefit in the period of enactment. A valuation allowance may be provided to the extent management deems it is more likely than not that deferred tax assets will not be realized. The ultimate realization of net deferred tax assets is dependent upon the generation of future taxable income, in the appropriate taxing jurisdictions, during the periods in which temporary differences, net operating losses and tax credits become realizable. Management believes that it is more likely than not that the Company will realize the benefits of these temporary differences and operating loss and tax credit carryforwards, net of valuation allowances. The Company recognizes and measures tax positions taken or expected to be taken in its tax return based on their technical merit and assesses the likelihood that the positions will be sustained upon examination based on the facts, circumstances and information available at the end of each period. Interest and penalties on tax liabilities, if any, would be recorded as incurred in interest expense and other expenses, respectively.

Earnings Per Share

Basic net income per common share attributable to common shareholders is calculated by dividing net income attributable to common shareholders by the weighted average number of common shares outstanding for the period. Diluted net income per common share attributable to common shareholders is calculated by dividing net income attributable to common shareholders by the diluted weighted average number of common shares outstanding for the period. Basic and diluted income per common share is not provided for the three and six months ended June 30, 2020 as the Company was organized as an LLC during that period. The Company used the weighted average method in determining earnings per share in consideration of the conversion of participating securities to common shares due to the reorganization in January 2021.

Recent Accounting Pronouncements Not Yet Adopted

In December 2019, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”)

No. 2019-12,

Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes (“ASU

2019-12”),

which is intended to simplify various aspects related to accounting for income taxes. ASU

2019-12

removes certain exceptions to the general principles.

in Topic 740 and also clarifies and amends existing guidance to improve consistent application. This guidance is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020, with early adoption permitted. As an emerging growth company, the Company has elected to adopt this pronouncement following the effective date for private companies beginning with periods beginning after December 15, 2021. The Company is currently evaluating the impact of this standard on its consolidated financial statements and related disclosures.

Any new accounting standards, not disclosed above, that have been issued or proposed by FASB that do not require adoption until a future date are not expected to have a material impact on the consolidated financial statements upon adoption.

Recent Accounting Pronouncements, Adopted

In February 2016, the FASB issued Accounting Standards Update ASU

No. 2016-02,

Leases (Topic 842), which requires lessees to recognize a

right-of-use

(“ROU”) asset and a lease liability for all leases with terms greater than 12 months and also requires disclosures by lessees and lessors about the amount, timing and uncertainty of cash flows arising from leases. Subsequent to the issuance of Topic 842, the FASB clarified the guidance through several ASUs; hereinafter the collection of lease guidance is referred to as “ASC 842”. On January 1, 2021, the Company adopted ASC 842. The Company had no leasing arrangements at the beginning of the period of adoption. As a result, no cumulative impact of adopting ASC 842 was recorded. The Company also elected to exclude leases with a term of 12 months or less in the recognized ROU assets and lease liabilities, when the likelihood of renewal is not probable. Refer to Note 5 for additional disclosures required by ASC 842. The Company determines if an arrangement is a lease at inception. ROU assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent an obligation to make lease payments arising from the lease. ROU assets and lease liabilities are recognized at the lease commencement date based on the present value of lease payments over the lease term. The Company uses its incremental borrowing rate based on the information available at commencement date in determining the present value of lease payments. The lease terms used to calculate the ROU asset and related lease liability include options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option.

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation and Use of Estimates

The Company’s consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”).

Principles of Consolidation

The consolidated financial statements include the accounts of the Company and its subsidiaries as described in Note 1. All significant intercompany accounts and transactions have been eliminated.

Cash and Cash Equivalents

Cash and cash equivalents consist of demand deposit accounts and other short-term investments which mature within three months from the date of purchase. The Company maintains its cash in bank deposit accounts which may, at times, exceed federally insured limits. The Company has not experienced any losses in such accounts and believes it is not exposed to any significant credit risk with respect to cash and cash equivalents.

Accounts Receivable

The Company provides credit in the normal course of business to its power customer, NYISO. The Company performs periodic credit evaluations of its customer’s financial condition and generally does not require collateral. NYISO makes payments, depending on the type of revenue, within seven days of usage or seven days of month end. Based on the reliability of customer payments, the Company has determined that an allowance for doubtful accounts was not required at December 31, 2020 or 2019. Accounts are written off when collection efforts have been exhausted. No accounts were written off as uncollectible during the years ended December 31, 2020 or 2019.

Digital Assets

Digital assets are included in current assets in the accompanying consolidated balance sheets. Digital assets are classified as indefinite-lived intangible assets in accordance with Accounting Standards Codification (“ASC”) 350,

Intangibles—Goodwill and Other

, and are accounted for in connection with the Company’s revenue recognition policy disclosed below. When events or circumstance indicate that digital assets may be impaired, they are tested for impairment. Impairment, if any, is recognized for the difference between the fair value of the underlying digital assets and the carrying amount of the digital asset. The Company assessed these digital assets and determined no impairment existed at December 31, 2020. At December 31, 2019, the Company determined that impairment existed and as such, the Company recorded an impairment loss of $100 to reduce the carrying cost of the digital assets at December 31, 2019. At December 31, 2020 and 2019, the Company’s digital assets consisted of approximately 26.1 and 38.9 Bitcoins, respectively.

Digital assets awarded to the Company through its mining activities are included within the operating activities in the accompanying consolidated statements of cash flows. The Company accounts for its gains or losses in accordance with the last in, first out (“LIFO”) method of accounting. Gains and losses from the sales of digital assets are recorded in other income (expense) in the accompanying consolidated statements of operations.

While management uses available information to evaluate and recognize impairment losses on digital assets, further reductions in the carrying amounts may be necessary based on the changes in the underlying value of Bitcoin.

Fuel Deposits

The Company is required to maintain a cash deposit ($100 minimum) with a third-party broker for gas purchases and collection of revenues on the Company’s behalf.

Project Deposit

The Company has a contract to connect its power generation facility with the New York State Transmission System, which requires the Company to make a deposit for work to commence. The balance of the deposit was $74 and $510 as of December 31, 2020 and 2019, respectively. The project was substantially completed in 2020 with the remaining deposit balance expected to be refunded in 2021.

Emissions Expense and Credits

The Company generates carbon dioxide emissions. As a result, the Company incurs emissions expense and is required to purchase emission credits, which are valued at cost, to offset the liability. The Company participates in the Regional Greenhouse Gas Initiative (“RGGI”), which requires, by law, that the Company remit credits to offset 50% of the Company’s annual emission expense in the following year, for each of the years in the three year control period (January 1, 2018 to December 31, 2020). After the control period ends, the Company will remit credits to extinguish the remaining emission expense liability. The Company recognizes expense on a per ton basis, where one ton is equal to one RGGI credit.

The RGGI credits are recorded on a first in, first out (“FIFO”) basis. The Company incurred emissions expense of $1,738 and $206 for the years ended December 31, 2020 and 2019, respectively, which is included in power and capacity cost of revenue in the accompanying consolidated statements of operations.

Miner Equipment Deposits

The Company enters into agreements to purchase miner equipment, computer hardware designed for use in the cryptocurrency mining process that often require deposits before the equipment is received and placed into service.

Property and Equipment

Property and equipment is stated at cost, less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the related assets, which generally range from three to thirty-nine years.

Major additions and betterments are capitalized, while repairs and maintenance are charged to operations as incurred. Upon retirement or sale of an asset, the cost and related accumulated depreciation are eliminated and any resulting gain or loss is included within other income (expense) in the accompanying consolidated statements of operations.

Impairment of Long-Lived Assets

The Company assesses its long-lived assets for impairment whenever events or circumstances indicate the carrying amounts of long-lived assets may not be recoverable by comparing the expected undiscounted future cash flows of the assets with the respective carrying amounts as of the date of assessment. Should aggregate expected future cash flows be less than the carrying value, an impairment would be recognized, measured as the difference between the carrying value and the fair value of the asset. During the years ended December 31, 2020 and 2019, the Company did not record any impairment charges.

Natural Gas Payable

The Company purchases natural gas through a third-party broker on a daily basis. This amount represents the unpaid balance due to the broker at December 31, 2020 and 2019.

Asset Retirement Obligations

The following table reflects the details of the asset retirement obligations included in the consolidated balance sheets at December 31, 2020 and 2019:


	Coal Ash Pond
Balance at January 1, 2019	$	—
Initial recognition		2,135

Balance at December 31, 2019		2,135
Accretion		142

Balance at December 31, 2020	$	2,277

Coal Combustion Residuals

Coal combustion residuals (“CCR”) are subject to Federal and State regulations. Our obligations associated with CCR are for the closure of a coal ash pond. With regards to its coal ash pond, in accordance with Federal law and ASC

410-20,

Asset Retirement Obligations,

the Company recorded an asset retirement obligation of $2,277 and $2,135 at December 31, 2020 and 2019, respectively. There were no changes to cash flow estimates related to the coal ash pond asset retirement obligation during 2020. Estimates are based on various assumptions including, but not limited to, closure cost estimates, timing of expenditures, escalation factors, discount rate of 5.00% and methods for complying with CCR regulations. Additional adjustments to the asset retirement obligations are expected periodically due to potential changes in estimates and assumptions.

Environmental Trust Liability

The Company owns and operates a landfill. As required by the New York State Department of Environmental Conservation (“NYSDEC”), landfills are required to fund a trust to cover closure costs and expenses after the landfill has stopped operating. The trust is designed to provide funds for 30 years of expenses to maintain a landfill once it is full and has no further source of revenue or in case the owner is defunct and the NYSDEC has to operate the landfill. At December 31, 2020, the landfill is a fully permitted, operational landfill and also acts as a leachate treatment

facility. An annual report is completed by a third-party engineering firm to provide environmental compliance and calculate combined closure and post-closure costs, discounted to current year dollars using a discount rate of 4.50%. In lieu of a trust, the Company has negotiated with its largest equity member to maintain a letter of credit guaranteeing the payment of the liability (see Note 5). In accordance with ASC

410-20,

Asset Retirement Obligations

, the Company has recorded an environmental liability of $4,927 and $4,697 at December 31, 2020 and 2019, respectively. The letter of credit related to this liability was for $4,938 at December 31, 2020 and 2019 (see Note 5).

Revenue Recognition

The Company recognizes revenue in accordance with ASC 606,

Revenue from Contracts with Customers

. The core principle of the revenue standard is that a company should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled to in exchange for those goods or services. The following five steps are applied to achieve that core principle:

•

Step 1: Identify the contract, or contracts, with the customer;

•

Step 2: Identify the performance obligations in the contract;

•

Step 3: Determine the transaction price;

•

Step 4: Allocate the transaction price to the performance obligations in the contract; and

•

Step 5: Recognize revenue when, or as, the Company satisfies a performance obligation.

In order to identify the performance obligations in a contract with a customer, the Company must assess the promised goods or services in the contract and identify each promised good or service that is distinct. A performance obligation meets ASC 606’s definition of a “distinct” good or service (or bundle of goods or services) if both of the following criteria are met: The customer can benefit from the good or service either on its own or together with other resources that are readily available to the customer (i.e., the good or service is capable of being distinct), and the entity’s promise to transfer the good or service to the customer is separately identifiable from other promises in the contract (i.e., the promise to transfer the good or service is distinct within the context of the contract).

If a good or service is not distinct, the good or service is combined with other promised goods or services until a bundle of goods or services is identified that is distinct.

The transaction price is the amount of consideration to which an entity expects to be entitled in exchange for transferring promised goods or services to a customer. The consideration promised in a contract with a customer may include fixed amounts, variable amounts, or both. When determining the transaction price, an entity must consider the effects of all of the following:

•

Variable consideration;

•

Constraining estimates of variable consideration;

•

The existence of a significant financing component in the contract;

•

Noncash consideration; and

•

Consideration payable to a customer.

Variable consideration is included in the transaction price only to the extent that it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved. The transaction price is allocated to each performance obligation on a relative standalone selling price basis. The transaction price allocated to each performance obligation is recognized when that performance obligation is satisfied, at a point in time or over time as appropriate.

Cryptocurrency mining and related activities revenue

The Company has entered into digital asset mining pools by executing contracts with the mining pool operators to provide computing power to the mining pool. The contracts are terminable at any time by either party and the Company’s enforceable right to compensation only begins when the Company provides computing power to the mining pool operator. In exchange for providing computing power, the Company is entitled to a theoretical fractional share of the cryptocurrency award the mining pool operator receives (less pool fees to the mining pool operator which are recorded as a reduction of revenue) for successfully adding a block to the blockchain. The Company’s fractional share is based on their share of the theoretical global mining rewards based on its percentage contribution to the bitcoin mining network.

Providing computing power in digital asset transaction verification services is an output of the Company’s ordinary activities. The provision of providing such computing power is the only performance obligation in the Company’s contracts with mining pool operators. The transaction consideration the Company receives, if any, is noncash consideration, which the Company measures at fair value on the date received, which is not materially different than the fair value at the contract inception or the time the Company has earned the award from the pools. The consideration is all variable. Because it is not probable that a significant reversal of cumulative revenue will not occur, the consideration is constrained until the mining pool operator successfully places a block (by being the first to solve an algorithm) and the Company receives confirmation of the consideration it will receive, at which time revenue is recognized.

Fair value of the cryptocurrency award received is determined using the quoted price on the Company’s primary exchange of the related cryptocurrency at the time of receipt.

There is currently no specific definitive guidance under GAAP or alternative accounting framework for the accounting for cryptocurrencies recognized as revenue or held, and management has exercised significant judgment in determining the appropriate accounting treatment. In the event authoritative guidance is enacted by the Financial Accounting Standards Board (“FASB”), the Company may be required to change its policies, which could have an effect on the Company’s consolidated financial position and results of operations.

Hosting revenue

The Company provides energized space and operating and maintenance services to third-party mining companies who locate their mining hardware at its power plant facility. The Company accounts for these agreements as a single performance obligation for services being delivered in a series with delivery being measured by daily successful operation of the mining hardware. As such, the Company recognizes revenue over the life of the contract as its series of performance obligations are met. Hosting contracts typically require payment in advance of the service delivery. The Company recognizes such payments as deferred revenue until its performance obligations are met, at which time the Company recognizes the revenue. The Company does not have any significant warranty obligations. Hosting revenue is included in cryptocurrency mining and related activities revenue in the consolidated statements of operations.

Hashrate revenue

From time to time, the Company sells its computing power at a fixed price over a period of time ranging from 30 to 180 days. The Company accounts for these agreements as a single performance obligation for services being delivered in a series with delivery being measured by daily delivery of the computing power. As such, the Company recognizes revenue over the life of the contract as its series of performance obligations are met. The Company does not have any significant warranty obligations. Hashrate revenue is included in cryptocurrency mining and related activities revenue in the consolidated statements of operations.

Power and capacity revenue

The Company recognizes power revenue at a point in time, when the electricity is delivered to the NYISO and its performance obligation is met. The Company recognizes revenue on capacity agreements over the life of the contract as its series of performance obligations are met as capacity to provide power is maintained.

Sales tax, value-added tax, and other taxes the Company collects concurrent with revenue-producing activities are excluded from revenue. Incidental contract costs that are not material in the context of the delivery of goods and services are recognized as expense. There is no significant financing component in these transactions.

Income Taxes

The Company is treated as a partnership for federal and state income tax purposes. Pursuant to this election, the profit or loss of the Company is reported in the individual income tax returns of the members. Therefore, no provision for Federal or State taxes has been made for the years ended December 31, 2020 or 2019.

The Company recognizes and measures tax positions taken or expected to be taken in its tax return based on their technical merit and assess the likelihood that the positions will be sustained upon examination based on the facts, circumstances and information available at the end of each period. Interest and penalties on tax liabilities, if any, would be recorded as incurred in interest expense and other expenses, respectively.

Advertising and Promotion Costs

Advertising and promotional costs are expensed as incurred and totaled $117 for the year ended December 31, 2020. The Company did not incur any advertising and promotional costs for the year ended December 31, 2019.

Recent Accounting Pronouncements Not Yet Adopted

In December 2019, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”)

No. 2019-12,

Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes (“ASU

2019-12”)

, which is intended to simplify various aspects related to accounting for income taxes. ASU

2019-12

removes certain exceptions to the general principles in Topic 740 and also clarifies and amends existing guidance to improve consistent application. This guidance is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020, with early adoption permitted. The Company is currently evaluating the impact of this standard on its consolidated financial statements and related disclosures.

Recent Accounting Pronouncements, Adopted

In May 2014, the FASB issued

ASU 2014-09,

Revenue from Contracts with Customers

(Topic 606), a new accounting standard related to revenue recognition. The new standard supersedes nearly all U.S. GAAP on revenue recognition and eliminated industry-specific guidance. The underlying principle of the new standard is to recognize revenue when a customer obtains control of promised goods or services at an amount that reflects the consideration that is expected to be received in exchange for those goods or services. On January 1, 2019, the Company adopted Topic 606 using the modified retrospective method. ASC 606 provides a five-step model for analyzing contracts and transactions to determine when, how, and if revenue is recognized. Revenue should be recognized to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which an entity

expects to be entitled in exchange for those goods or services. Revenue recognition under the new standard did not have a material impact on the consolidated balance sheets, consolidated statements of operations, or consolidated statements of cash flows.

PROPERTY AND EQUIPMENT

6 Months Ended

12 Months Ended

Jun. 30, 2021

Dec. 31, 2020

Property, Plant and Equipment [Abstract]

Property and Equipment

PROPERTY AND

EQUIPMENT

Property and equipment, net consisted of the following at June 30, 2021 and December 31, 2020:


	Estimated Useful Lives		June 30, 2021			December 31, 2020
Plant infrastructure		15 – 39 years	$	34,216		$	33,944
Miners		5 years		24,146			10,236
Miner facility infrastructure		15 years		13,804			8,791
Land		N/A		300			300
Equipment		5 years		211			211
Software		3 years		186			66
Coal ash impoundment		4 years		2,135			2,135
Construction in process		N/A		4,104			3,989

				79,102			59,672
Less: Accumulated depreciation				(11,756	)		(8,986	)

			$	67,346		$	50,686

Total depreciation expense

was $1,603 and $2,864 for the three and six months ended June 30, 2021 and was $1,130 and $2,163 for the three and six months ended June 30, 2020, respectively.

PROPERTY AND EQUIPMENT

Property and equipment, net consisted of the following at December 31:


	Estimated Useful Lives		2020			2019
Plant infrastructure		15 – 39 years	$	33,944		$	31,387
Miners		5 years	$	10,236			—
Miner Facility		15 years		8,791			—
Land		N/A		300			300
Equipment		5 years		211			206
Software		3 years		66			66
Coal ash impoundment		4 years		2,135			2,135
Construction in process		N/A		3,989			7,392

				59,672			41,486
Less: Accumulated depreciation				(8,986	)		(4,422	)

			$	50,686		$	37,064

Total depreciation expense was $4,564 and $1,679 for the years ended December 31, 2020 and 2019, respectively.

NOTES PAYABLE

6 Months Ended

12 Months Ended

Jun. 30, 2021

Dec. 31, 2020

Debt Disclosure [Abstract]

Notes Payable

NOTES PAYABLE

The Company has entered into equipment finance agreements that are secured by the purchased miner equipment. These agreements generally require monthly payments of principal, interest and a risk premium fee. The following table provides information on the equipment financing agreements:


					Interest Rate			Initial Financing		Balance as of:
Note	Loan Date		Maturity Date		Interest Rate			Initial Financing		June 30, 2021			December 31, 2020
A		December 2020		June 2022		17.0	%	$	4,482	$	2,739		$	4,233
B		December 2020		June 2022		17.0	%		428		261			404
C		March 2021		November 2022		17.0	%		2,229		2,105			—
D		April 2021		December 2022		17.0	%		4,012		4,012			—
E – H		May 2021		October 2023		15.0	%		9,446		9,446			—

											18,563			4,637
Less: Current portion											(11,499	)		(3,273	)

										$	7,064		$	1,364

The Company incurred interest expense of $202 and $368 during the three and six months ended June 30, 2021, respectively, under the terms of these notes payable.

NOTES PAYABLE

The Company entered into an equipment finance agreement during December 2020 to finance miner equipment purchases totaling $4,482 with a third-party (“Miner equipment note A”). The terms of the financing agreement require interest at 17% per annum, including a risk premium fee of $482. The note requires principal payments of $222, risk premium payments of $27, and variable amounts of interest, every 30 days through the maturity date in July 2022. The note is secured by the purchased equipment.

The Company entered into an equipment finance agreement during December 2020 to finance miner equipment purchases totaling $428 with a third-party (“Miner equipment note B”). The terms of the financing agreement require interest at 17% per annum and principal payments of $24, plus variable amounts of interest, every 30 days through the maturity date in June 2022. The note is secured by the purchased equipment.

The Company entered into three other equipment finance agreements with similar terms in December 2020 that have not yet taken effect as of December 31, 2020. The agreements are expected to take effect when the equipment is delivered to the Company, which is expected in the second quarter of 2021. The aggregate amount of equipment and principal borrowings under the three agreements is $10,698.

As of December 31, 2019, there were no notes payable outstanding. Notes payable consisted of the following at December 31, 2020:


Miner equipment note A	$	4,233
Miner equipment note B		404

		4,637
Less: Current portion		(3,273	)

	$	1,364

Future maturities of notes payable are as follows for the years ending December 31:


2021	$	3,273
2022		1,364

	$	4,637

The Company incurred interest expense of $91 during the year ended December 31, 2020 under the terms of these notes payable.

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-URI http://asc.fasb.org/topic&trid=2208564

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1B
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1C
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495334-112611

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1I
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495371-112611

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1I
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495371-112611

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(c))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1C
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495334-112611

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1C
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495334-112611

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1E
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495348-112611

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1I
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495371-112611

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1B
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611

+ Details

FINANCE LEASE

6 Months Ended

Jun. 30, 2021

Leases [Abstract]

Finance Lease

FINANCE LEASE

ASC 842 requires the Company to recognize an ROU asset and a lease liability for all leases with terms greater than 12 months. Refer to Note 2 for discussion on the adoption of ASC 842. The Company entered into a finance lease to finance the purchase of equipment on March 11, 2021. The Company recorded an ROU asset of $1,404 at the lease commencement date and a finance lease obligation of $1,207. The lease for this equipment ends August 31, 2022.

RELATED PARTY TRANSACTIONS

6 Months Ended

12 Months Ended

Jun. 30, 2021

Dec. 31, 2020

Related Party Transactions

RELATED PARTY TRANSACTIONS

Notes Payable

The Company entered into a promissory note agreement during 2020 with its largest equity members, Atlas Capital Resources LP and Atlas Capital Resources (P) LP (collectively referred to herein as “Atlas”). Within the agreement, there were two separate loans. One of these related party loans had a June 2021 maturity and a balance of $2,382 at December 31, 2020, and the other loan had a May 2021 maturity with a balance of $1,191

at December 31, 2020. The promissory notes bore interest at

8% per annum calculated on a

360-day

year, and interest accrued and compounded on a quarterly basis. All accrued but unpaid interest under the notes was due and payable upon the corresponding note maturity date. Under this promissory note agreement, the Company incurred interest expense of $0 and $22 for the three and six months ended June 30, 2021, respectively. During the three and six months ended June 30, 2020, the company incurred interest expense on related party loans of $273 and $540, respectively, associated with loans that were converted into senior priority units in July 2020.

Notes payable to related party consisted of the following:


	June 30, 2021		December 31, 2020
Note payable to a related party due June 2021	$	—	$	2,382
Note payable to a related party due May 2021		—		1,191

	$	—	$	3,573
Less: Current Portion	$	—	$	(3,573	)

	$	—	$	—

The related party loans in the table above were converted into Greenidge common stock in January 2021 (See Note 7).

Letters of Credit

On March 19, 2021, the Company and Atlas and its affiliates entered into an arrangement pursuant to which Greenidge agreed, upon request, to direct its bank to issue new letters of credit to replace all or a portion of the letters of credit provided by Atlas and certain of its affiliates, upon the consummation of a potential investment in, financing of, or sale of any assets or equity or debt securities of the Company, which results in net proceeds to the Company of at least $10,000,000.

Atlas obtained a letter of credit from a financial institution in the amount of $4,994 at June 30, 2021, payable to the NYSDEC. This letter of credit guarantees the current value of the Company’s environmental trust liability as discussed in Note 2.

Atlas also obtained a letter of credit from a financial institution in the amount of $3,630

at June 30, 2021, payable to Empire Pipeline Incorporated (“Empire”) in the event the Company should not make contracted payments for costs related to a pipeline interconnection project the Company has entered into with Empire (See Note 11).

Guarantee

An affiliate of Atlas has guaranteed the payment obligations of Greenidge Generation LLC (“Greenidge Generation”) in favor of Emera Energy Services, Inc. under an Energy Management Agreement and an ISDA Master Agreement under which Greenidge Generation may enter into various transactions involving the purchase and sale of gas, electricity and other commodities with Emera Energy Services, Inc. This guaranty is limited to

$1.0 million.

Greenidge Coin, LLC Equity Transactions

On October 2, 2019, Blocker, a related entity through common ownership, purchased 15,000 preferred units of GC for $15,000.

On July 1, 2020, Atlas purchased the preferred units of Blocker for $

16,277

, the amount of the aggregate liquidation preference, and contributed its membership interest in Blocker to GGH in exchange for Senior Priority Units—Tranche 2 (See Note 7) on July 2, 2020.

On December 31, 2020, Blocker entered into a liquidating distribution agreement with GGH, effectively dissolving Blocker into GGH.

RELATED PARTY TRANSACTIONS

Notes Payable

The Company entered into a promissory note agreement during the year ended December 31, 2019 with its largest equity members, Atlas Capital Resources (A9) LP and Atlas Capital Resources (P) LP (together referred to as “Atlas”). Within the agreement, there were three separate loans with varying loan amounts and maturity dates. The notes bore interest at 8% per annum calculated on a

360-day

year, and interest accrued and compounded on a quarterly basis. On July 2, 2020, the Company entered into a contribution and exchange agreement with Atlas, and the three notes payable and related accrued interest was converted into equity in the form of Senior Priority Units – Tranche 1. The Company incurred interest expense of $553 and $673 under the terms of this promissory note agreement for the years ended December 31, 2020 and 2019, respectively.

The Company entered into a promissory note agreement during 2020 with its largest equity members, Atlas. Within the agreement, there are two separate loans with varying loan and maturity dates as described in the table below. The notes bear interest at 8% per annum calculated on a

360-day

year, and interest accrues and compounds on a quarterly basis. All accrued but unpaid interest under the notes is due and payable upon the corresponding note maturity date. For the year ended December 31, 2020, the Company incurred interest expense of $20 under the terms of this promissory note agreement.

Notes payable to related party consisted of the following at December 31:


	2020			2019
Note payable to a related party with interest at 8% per annum. All outstanding principal and accrued but unpaid interest is due June 2021.	$	2,382		$	—
Note payable to a related party with interest at 8% per annum. All outstanding principal and accrued but unpaid interest is due May 2021.		1,191			—
Notes payable converted into Senior Priority Units—Tranche 1 (see Note 6).		—			12,700

		3,573			12,700
Less: Current portion		(3,573	)		(5,000	)

	$	—		$	7,700

Letters of Credit

The largest equity members of the Company, Atlas Capital Resources LP and Atlas Capital Resources (P) LP, obtained a letter of credit from a financial institution in the amount of $4,938 at December 31, 2020 and 2019, payable to the NYSDEC. This letter of credit guarantees the current value of the Company’s environmental trust liability as discussed in Note 2.

Atlas Capital Resources LP and Atlas Capital Resources (P) LP also obtained a letter of credit from a financial institution in the amount of $3,630 at December 31, 2020 and 2019, payable to Empire Pipeline Incorporated (“Empire”) in the event the Company should not make contracted payments for costs related to a pipeline interconnection project the Company has entered into with Empire.

The Company paid Atlas Capital Resources LP and Atlas Capital Resources (P) LP $184 and $206 for letter of credit fees during the years ended December 31, 2020 and 2019, respectively.

Greenidge Coin, LLC Equity Transactions

On October 2, 2019, Blocker, a related entity through common ownership, purchased 15,000 preferred units of GC for $15,000.

On July 1, 2020, Atlas purchased the preferred units of Blocker for $16,277, the amount of the aggregate liquidation preference, and contributed its membership interest in Blocker to GGH in exchange for Senior Priority Units—Tranche 2 (See Note 6) on July 2, 2020.

On December 31, 2020, Blocker entered into a liquidating distribution agreement with GGH, effectively dissolving Blocker into GGH.

STOCKHOLDERS' EQUITY

6 Months Ended

Jun. 30, 2021

Stockholders' Equity Note [Abstract]

Stockholders Equity

STOCKHOLDERS’ EQUITY

Authorized Shares

Greenidge has the authority to issue 520,000,000 shares of capital stock, consisting of 400,000,000 shares of Class A common stock, $0.0001 par value per share, 100,000,000 shares of Class B common stock, $0.0001 par value per share, and 20,000,000 shares of preferred stock, $0.0001 par value per share

Contribution and Exchange

Agreement

In January 2021, GGH LLC completed a corporate restructuring. Pursuant to this restructuring, Greenidge was formed and incorporated in the State of Delaware on January 27, 2021. On January 29, 2021, Greenidge entered into an asset contribution and exchange agreement with the owners of GGH, in which the GGH owners’ equity interests and outstanding notes payable to related parties and all accrued but unpaid interest were contributed into

GGHI in

exchange

for 7,000,000 shares of Greenidge Class B common stock (28,000,000 shares following the

4-for-1

stock split noted below) (see Note 6). As a result of this transaction, GGH became a wholly-owned subsidiary of GGHI.

Private Placement Offering

In January 2021, Greenidge completed a private placement offering in which 1,620,000 shares of series A redeemable convertible preferred stock was sold at $25 per share. Total net proceeds from the private placement offering were $37,113

Common Stock

The holders of Class A Common Stock are entitled to one vote per share. The holders of Class B Common Stock are entitled to ten votes per share. Class A and Class B shares issued and outstanding as of June 30, 2021 are 0 and 28,320,000, respectively.

Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder upon written notice to the Company. Shares of Class B Common Stock will automatically convert to shares of Class A Common Stock upon a mandatory conversion event as defined in the amended and restated certificate of incorporation dated March 26, 2021.

Preferred Stock

The holders of Preferred Stock are not entitled to voting rights.

If dividends are declared and paid to the holders of common stock, the holders of preferred stock are entitled to a dividend equivalent as if the preferred stock were converted to common stock. Preferred stockholders are also entitled to a paid-kind-dividend of additional shares of preferred stock (capped at 12% of stated value) upon certain events occurring as defined in the amended and restated certificate of incorporation dated March 26, 2021. Such events included failure to file, effectiveness failure, and mandatory redemption failure.

In the event of any voluntary or involuntary liquidation, dissolution or winding up of Greenidge or any deemed liquidation event in which Greenidge is a constituent party, before any payment to the holders of common stock, the holders of preferred stock then outstanding shall be paid out of the funds and assets available for distribution to stockholders an amount per share equal to the stated value for such share, plus an amount per share equal to the stated value of any shares issuable as the result of any accrued, but unpaid,

paid-in-kind

dividends. If Greenidge’s funds and assets are insufficient to pay such liquidation preference in full, the funds and assets available for distribution shall be distributed ratably to the holders of the shares of preferred stock.

Each share of preferred stock will be automatically converted to four shares of Class B common stock when the Company’s registration statement to register such shares for resale is declared effective by the Securities and Exchange Commission, or, if the Company is not listed within 18 months of the issue date, the shares of preferred stock will convert to common shares based on an initial conversion price of $25 per share of preferred stock.

Liquidation value as of June 30, 2021 is

$25 per share.

Common Units

In October 2018, GGH adopted an equity incentive plan and allocated 1,250 common units to the plan. In 2018, GGH awarded 750 restricted units to certain board members, subject to various vesting provisions. At December 31, 2020, there were 730 and 20 vested and unvested, respectively, restricted units. In the event of a change in control of the Company, 100% of the awarded units would vest immediately. Common unit holders are entitled to one vote per common unit, except for such votes or consents that are reserved solely for the holders of preferred units.

The

Company concluded that the value of the units granted in 2018 was insignificant given historical performance of the Company, no public market, and lack of liquidity. As such, the Company

did not

recognize any expense related to the common restricted units during the three and six months ended June 30, 2021 and 2020. There

were 750

common units issued and outstanding at December 31, 2020. In January 2021, in conjunction with the Private Placement Offering, the 750 GGH common units were converted to shares of Class B Greenidge common stock.

Preferred Units

Preferred unit holders were entitled to one vote per preferred unit. In the event of liquidation or dissolution of GGH, the holders of preferred units were entitled to receive distributions, prior to and in preference to the holders of common units. At December 31, 2020, all preferred units were issued and outstanding. All preferred units were converted to shares of Class B Greenidge common stock in connection with the contribution and exchange agreement.

Senior Priority Units

There were two tranches of Senior Priority Units: Tranche 1 was equal to $13,926 and Tranche 2 was equal to $16,276. Tranche 1 Senior Priority Units were issued to Atlas in July 2020 in exchange for the conversion of certain notes payable due to Atlas and all accrued but unpaid interest thereon. Tranche 2 Senior Priority Units were issued to Atlas in conjunction with Atlas contributing its equity interest in Blocker to GGH. Senior Priority Units had no voting rights.

At December 31, 2020, all senior priority units were issued and outstanding. All senior priority units were converted to shares of Class B Greenidge common stock in connection with the contribution and exchange agreement.

- Definition

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 14
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496171-112644

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496171-112644

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 18
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496189-112644

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644

Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-URI http://asc.fasb.org/topic&trid=2208762

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 18
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496189-112644

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 14
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496171-112644

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 18
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496189-112644

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 16
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496180-112644

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(e)(1))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

+ Details

MEMBERS' EQUITY

12 Months Ended

Dec. 31, 2020

Equity [Abstract]

Members' Equity

MEMBERS’ EQUITY

Authorized Units

On July 2, 2020, GGH amended and restated its LLC agreement. The Company is authorized to issue 1,250 common units, 39,228 preferred units, and 10,000 senior priority units.

Common Units

2020, there

were 730 and 20 vested and

unvested,

respectively, restricted units. At December 31, 2019, there were 600 and 150 vested and unvested, respectively, restricted units. In the event of a change in control of the Company, 100% of the awarded units shall vest immediately. Common unit holders are entitled to one vote per common unit, except for such votes or consents that are reserved solely for the holders of preferred units. The Company concluded that the value of the units granted in 2018 was insignificant given historical performance of the Company, no public market, and lack of liquidity. As such, the Company has not recognized any expense related to the restricted units during the years ended December 31, 2020 or 2019. There were 750 common units issued and outstanding at both December 31, 2020 and 2019.

Preferred Units

Preferred unit holders are entitled to one vote per preferred unit. In the event of liquidation or dissolution of GGH, the holders of preferred units are entitled to receive distributions, prior to and in preference to the holders of common units. At December 31, 2020 and 2019, all preferred units were issued and outstanding.

In the event of liquidation or dissolution of GGH, the holders of preferred units are entitled to receive distributions, prior to and in preference to the holders of common units, in an amount equal to $1 per preferred unit.

Senior Priority Units

There are two tranches of Senior Priority Units: Tranche 1 is equal to $13,926 and Tranche 2 is equal to $16,276. Tranche 1 Senior Priority Units were issued to Atlas Capital Resources LP and Atlas Capital Resources (P) LP in the same historical ownership percentages in conjunction with Atlas converting the 2019 notes payable and accrued interest (see Note 5). Tranche 2 Senior Priority Units were issued to Atlas Capital Resources LP and Atlas Capital Resources (P) LP in the same historical ownership percentages in conjunction with Atlas contributing its equity interest in Blocker (see Note 5). Senior Priority Units have no voting rights.

In the event of liquidation or dissolution of GGH, the holders of senior priority units are entitled to receive distributions, prior to and in preference to the holders of common and preferred units. The holders of senior priority units are entitled to a cumulatively accrued rate of return on the investment of 8% in addition to the initial output of $13,926. The aggregate liquidation preference on GGH’s senior priority units was $14,498 at December 31, 2020.

At December 31, 2020, all senior priority units were issued and outstanding.

EMPLOYEE BENEFIT PLAN

12 Months Ended

Dec. 31, 2020

Retirement Benefits [Abstract]

Employee Benefit Plan

EMPLOYEE BENEFIT PLAN

GG sponsors a 401(k) plan (the Plan) covering substantially all GG employees. Employees become eligible to participate in the Plan upon the attainment of age

twenty-one.

Eligible employees may elect to make either

pre-tax

or Roth contributions to the Plan, subject to limitations set forth by the Plan and the Internal Revenue Code. The Company makes safe harbor matching contributions equal to 100% of the first 3% of employees’ eligible earnings which they elect to contribute and an additional 50% on the next 2% of employees’ eligible earnings which they elect to contribute. The Company may also make a

non-elective

contribution, at its discretion. Matching contributions totaled $19 and $48 for the years ended December 31, 2020 and 2019, respectively. The Company made no

non-elective

contributions to the Plan for the years ended December 31, 2020 or 2019.

EQUITY BASED COMPENSATION

6 Months Ended

Jun. 30, 2021

Share-based Payment Arrangement [Abstract]

Equity Based Compensation

EQUITY BASED COMPENSATION

In February 2021, Greenidge adopted an equity incentive plan and reserved 3,831,112 shares of common stock for issuance under the plan (the “2021 Equity Plan”).

Restricted Common Stock Unit Awards

During the three and six months ended June 30, 2021, the Company awarded 0 and

616,920

restricted common stock units (“RSUs”), respectively, under the 2021 Equity Plan to directors, which are generally eligible to vest over

a three-year period.

The Company’s unvested restricted common stock unit awards activity for the six months ended June 30, 2021 is summarized below:


	RSUs		Weighted Average Grant Date Fair Value
Unvested at December 31, 2020		—	$	—
Granted		616,920		6.25

Unvested at June 30, 2021		616,920		6.25

The value of RSU grants

is measured based on their fair market value on the date of grant and amortized over their requisite service periods. During the six months ended June 30, 2021, the fair market value of the awards granted totaled $3,856 and as of June 30, 2021, there was approximately $3,427 of total unrecognized compensation cost related to unvested restricted stock rights, which is expected to be recognized over a remaining weighted-average vesting period of approximately 3

years.

Common Stock Options

The Company’s stock options activity for the six months ended June 30, 2021 is summarized below:


	Options			Weighted Average Exercise Price per Share		Weighted Average Remaining Contractual Life (in years)
Outstanding at December 31, 2020		—		$	—		—
Granted		716,968			6.01		10.00
Exercised		(160,000	)		6.25		0.10
Forfeited		(6,000	)		6.25		9.70

Outstanding at June 30, 202 1		550,968			6.01		9.68
Options vested and expected to vest as of June 30, 2021		550,968			6.01		9.68
Options vested and exercisable as of June 30, 2021		257,484		$	5.80		9.64

The value of common stock option grants is measured based on their fair market value on the date of grant and amortized over their requisite service periods. During the six months ended June 30, 2021, the fair market value of the awards granted totaled $1,151 and as of June 30, 2021, there was approximately $438 of total unrecognized compensation cost related to unvested options, which is expected to be recognized over a remaining weighted-average vesting period of approximately 1.2 years

The intrinsic value of options exercised during the six months ended June 30, 2021 was immaterial.

The weighted average assumptions relating to the valuation of stock options granted for the six months ended June 30, 2021 were as follows:


Weighted Average fair value of grants	$	1.60
Expected volatility		35	%
Expected term (years)		4.5
Risk-free interest rate		0.4	%
Expected dividend yield		0.0	%

Stock-based Compensation

The Company recognized stock-based compensation expense of $406 and $1,062 within selling, general and administrative expenses during the three and six months ended June 30, 2021. No stock-based compensation expense was recognized during the three and six months ended June 30, 2020.

Stock-based compensation expense is included in selling, general and administrative expenses in the accompanying unaudited condensed interim consolidated statements of operations.

INCOME TAXES

6 Months Ended

Jun. 30, 2021

Income Tax Disclosure [Abstract]

Income Taxes

INCOME TAXES

The income tax provision for interim periods is determined using an estimate of the annual effective tax rate, adjusted for discrete items, if any, that are taken into account in the relevant period. Each quarter, the estimate of the annual effective tax rate is updated, and if the estimated effective tax rate changes, a cumulative adjustment is made.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 21
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32857-109319

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 11.C)
-URI http://asc.fasb.org/extlink&oid=122134291&loc=d3e330215-122817

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 17
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32809-109319

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 6.I.5.Q1)
-URI http://asc.fasb.org/extlink&oid=122134291&loc=d3e330036-122817

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 14
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32705-109319

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 270
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6424409&loc=d3e44925-109338

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-URI http://asc.fasb.org/topic&trid=2144680

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6424122&loc=d3e41874-109331

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h)(2))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

+ Details

EARNINGS PER SHARE

6 Months Ended

Jun. 30, 2021

Earnings Per Share [Abstract]

Earnings Per Share

10.

EARNINGS PER SHARE

The following table sets forth a reconciliation of the numerator and denominator used to compute basic earnings and diluted per share of common stock. Basic earnings per share is applicable only for the period from January 29, 2021 through June 30, 2021, which is the period following the reorganization GGH into Greenidge (as described in Note 2) and presents the period that the Company had outstanding common stock.


	Three Months Ended June 30, 2021			Six Months Ended June 30, 2021
Numerator
Net income	$	3,518		$	4,797
Less: Net income attributable to the member units before the reorganization		(648	)		(648	)

Net income attributable to Greenidge	$	2,870		$	4,149

Denominator
Basic weighted average shares outstanding		28,320			28,283
Dilutive effect of equity awards		625			482
Dilutive effect of convertible preferred stock		6,480			6,480

Diluted weighted average shares outstanding		35,425			35,245

Earnings per share
Basic	$	0.10		$	0.15
Diluted	$	0.08		$	0.12

Prior to the reorganization, there were no shares of common stock outstanding, and the LLC structure of GGH consisted of member units. The Company analyzed the calculation of earnings per unit for periods prior to the reorganization and determined that it resulted in values that would not be meaningful to the users of these consolidated financial statements. Therefore, earnings per share information has not been presented for the periods during 2020.

For the three and six months ended June 30, 2021 there were no shares excluded from the calculation of diluted earnings per share.

COMMITMENTS AND CONTINGENCIES

6 Months Ended

12 Months Ended

Jun. 30, 2021

Dec. 31, 2020

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

11.

COMMITMENTS AND CONTINGENCIES

From

time-to-time,

the Company is involved in legal proceedings arising in the ordinary course of business. As of August 31, 2021, the Company is not aware of litigation pending against it that could have, individually or in the aggregate, a material adverse effect on its financial position, results of operations, or cash flows.

As of June 30, 2021, the Company had entered into agreements to purchase miner equipment totaling $38,361 that required deposits of $15,889. The Company entered into agreements for committed secured financing on this equipment totaling $23,526 that will be funded upon delivery of the miners.

The Company entered into a

contract with Empire in September 2020 which provides for the transportation to its pipeline of 15,000 decatherms of natural gas per day, approximately $158 per month. The contract ends in September 2030 and may be terminated by either party with 12 months notice after the initial

10-year

period.

COMMITMENTS AND CONTINGENCIES

From

time-to-time,

the Company is involved in legal proceedings arising in the ordinary course of business. As of the date of the audit report, the Company is not aware of litigation pending against it that could have, individually or in the aggregate, a material adverse effect on its financial position, results of operations, or cash flows.

At December 31, 2020, the Company entered into an agreement to purchase miner equipment totaling $11,910 that required deposits of $5,959. At December 31, 2019, the Company entered into an agreement to purchase miner equipment totaling $7,860 that required deposits of $6,337.

The Company entered into a contract with Empire Pipeline Inc. in September 2020 which provides for the transportation to its pipeline of 15,000 decatherms of natural gas per day, approximately $158 per month. The contract ends in September 2030 and may be terminated by either party with 12 months notice after the initial

10-year

period.

CONCENTRATIONS

6 Months Ended

12 Months Ended

Jun. 30, 2021

Dec. 31, 2020

Risks and Uncertainties [Abstract]

Concentrations

12.

CONCENTRATIONS

The Company has one major power customer, NYISO, that accounted for 13% and 15% of its revenue for the three and six months ended June 30, 2021, respectively, and 27% for the three and six months ended June 30, 2020. 100% of accounts receivable were due from this customer at June 30, 2021 and December 31, 2020.

For cryptocurrency mining, Greenidge considers its mining pool operators to be its customers. Greenidge has historically used a limited number of pool operators that have operated under contracts with a

one-day

term, which

allows Greenidge the option to change pool operators at any time. Revenue from the Company’s largest pool operator customer accounted for

approximately 75% and 73% of total revenue for the three and six months ended June 30, 2021, respectively, and approximately 61% and 65% of total revenue for the three and six months ended June 30, 2020, respectively.

The Company has one major power vendor that accounted for approximately 56% and 59% of cost of revenue for the three and six months ended June 30, 2021, respectively, and approximately 52% and 59% of cost of revenue for the three and six months ended June 30, 2020, respectively.

CONCENTRATIONS

The Company has one major power customer, the NYISO, that accounts for 35.7% and 90.8% of its revenue for the years ended December 31, 2020 and 2019, respectively. All amounts receivable were due from this customer at December 31, 2020 and 2019.

The Company has one major power vendor that accounted for approximately 56.8% and 55.6% of cost of revenue for the years ended December 31, 2020 and 2019, respectively.

Revenues from Greenidge’s largest pool operator customer comprised approximately 57% of total revenue for the year ended December 31, 2020.

OTHER RISKS AND CONSIDERATIONS

6 Months Ended

12 Months Ended

Jun. 30, 2021

Dec. 31, 2020

Risks and Uncertainties [Abstract]

Other Risks and Considerations

13.

OTHER RISKS AND

CONSIDERATIONS

The United States is presently in the midst of a national health emergency related to a virus, commonly known as Novel Coronavirus

(“COVID-19”).

The overall consequences of

COVID-19

on a national, regional and local level are unknown, but it has the potential to result in a significant economic impact.

COVID-19

did not have a material impact on the Company’s operations during the three and six months periods ended June 30, 2021 and 2020, respectively. The future impact of this situation on the Company and its results and financial position is not presently determinable.

10.

OTHER RISKS AND CONSIDERATIONS

The United States is presently in the midst of a national health emergency related to a virus, commonly known as Novel Coronavirus

(“COVID-19”).

The overall consequences of

COVID-19

on a national, regional and local level are unknown, but it has the potential to result in a significant economic impact.

COVID-19

did not have a material impact on the Company’s operations during the year ended December 31, 2020. The future impact of this situation on the Company and its results and financial position is not presently determinable.

SUBSEQUENT EVENTS

6 Months Ended

12 Months Ended

Jun. 30, 2021

Dec. 31, 2020

Subsequent Events [Abstract]

Subsequent Events

14.

SUBSEQUENT EVENTS

Subsequent events have been evaluated through August 31, 2021, the date at which the condensed consolidated financial statements were available to be issued, and the Company has concluded that no such events or transactions took place that would require disclosure herein except as stated directly above.

11.

SUBSEQUENT EVENTS

In January 2021, GC merged into GG and GC was subsequently dissolved.

In January 2021, Greenidge Generation Holdings Inc. (“GGHI”) was formed in the state of Delaware. GGHI has the authority to issue 200,000,000 shares of common stock, $0.0001 par value per share, and 20,000,000 shares of preferred stock, $0.0001 par value per share.

After the formation of GGHI, the equity holders of GGH entered into an asset contribution and exchange agreement in which the holders’ equity interests and outstanding notes payable balances were contributed into GGHI in exchange for 7,000,000 shares of GGHI common stock (28,000,000 shares of GGHI Class B Common Stock after a 4-for-1 stock split that occurred in March 2021).

In January 2021, GGHI completed a private placement offering in which 1,620,000 shares of series A redeemable convertible preferred stock was sold at $25 per share. Total net proceeds from the private placement offering were $37,590.

In February 2021, GGHI adopted an equity incentive plan and reserved 957,778 shares of common stock (3,831,112 shares of Class A Common Stock after a 4-for-1 stock split that occurred in March 2021) for issuance under the plan.

On March 19, 2021, the Company entered into a definitive agreement and plan of merger for a business combination with Support.com, Inc., a Delaware corporation (NASDAQ: SPRT).

On March 19, 2021, the Company and the its largest equity member and its affiliates entered into an arrangement pursuant to which Greenidge agreed, upon request, to direct its bank to issue new letters of credit to replace all or a

portion of the letters of credit provided by the largest equity member and certain of its affiliates, upon the consummation of a potential investment in, financing of, or sale of any assets or equity or debt securities of the Company, which results in net proceeds to the Company of at least $10,000,000.

In May 2021, the Company entered into equipment financing agreements to finance miner equipment purchases totaling $13,947 with a

third-party.

The terms of the financing agreements require interest at 15% per annum. The notes require variable amounts of interest only payments for the first six to eight months of each agreement and variable payments of monthly principal and interest through the maturity date in

October 2023

. The notes are secured by the purchased equipment.

Subsequent events have been evaluated through August 6, 2021, the date at which the consolidated financial statements were available to be issued, and the Company has concluded that no such events or transactions took place that would require disclosure herein except as stated directly above.

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)

6 Months Ended

12 Months Ended

Jun. 30, 2021

Dec. 31, 2020

Accounting Policies [Abstract]

Basis of Presentation and Use of Estimates

The Company’s consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”).

Basis of Presentation and Principles of Consolidation

4-for-1

The consolidated financial statements include the accounts of the Company and its subsidiaries as described in Note 1. All significant intercompany accounts and transactions have been eliminated.

Use of estimates

Significant Accounting Policies

Significant Accounting

Policies

For a detailed discussion about the Company’s significant accounting policies, see the Company’s December 31, 2020 consolidated financial statements.

Principles of Consolidation

The consolidated financial statements include the accounts of the Company and its subsidiaries as described in Note 1. All significant intercompany accounts and transactions have been eliminated.

Emissions Expense and Credits

The Company generates carbon dioxide emissions. As a result, the Company incurs emissions expense and is required to purchase emission credits, which are valued at cost, to offset the liability. The Company participates in the Regional Greenhouse Gas Initiative (“RGGI”), which requires, by law, that the Company remit credits to offset 50% of the Company’s annual emission expense in the following year, for each of the years in the three year control period (January 1, 2018 to December 31, 2020). After the control period ends, the Company will remit credits to extinguish the remaining emission expense liability. The Company recognizes expense on a per ton basis, where one ton is equal to one RGGI credit.

Carbon Offset Credits

Asset Retirement Obligations

In accordance with Federal law and Accounting Standards Codification (“ASC”)

410-20,

Asset Retirement Obligations, the Company recorded an asset retirement obligation of $2,345 and $2,277 at June 30, 2021 and December 31, 2020, respectively. The company expensed $35 and $32

of 5.00

% and methods for complying with CCR regulations. Additional adjustments to the asset retirement obligations are expected periodically due to potential changes in estimates and assumptions.

Asset Retirement Obligations

The following table reflects the details of the asset retirement obligations included in the consolidated balance sheets at December 31, 2020 and 2019:


	Coal Ash Pond
Balance at January 1, 2019	$	—
Initial recognition		2,135

Balance at December 31, 2019		2,135
Accretion		142

Balance at December 31, 2020	$	2,277

Coal Combustion Residuals

410-20,

Asset Retirement Obligations,

Environmental Trust Liability

The trust is designed

%. In lieu of a trust, the Company has negotiated with its largest equity member to maintain a letter of credit guaranteeing the payment of the liability (see Note 6). In accordance with ASC

410-20,

the Company has recorded an environmental liability of

$4,994 and $4,927 at June 30, 2021 and December 31, 2020, respectively. The letter of credit related to this liability was for $4,994 at June 30, 2021 (see Note 6).

Environmental Trust Liability

410-20,

Asset Retirement Obligations

Leases

Right-of-use

In calculating the ROU asset and related lease liability, the Company elected to combine lease and

non-lease

Cryptocurrency Mining Cost of Revenue

Power and Capacity Cost of Revenue

Selling, General, and Administrative Expenses

Selling, general and administrative expenses consist primarily of administrative payroll and benefits, business development costs, professional fees, and insurance.

Stock-Based Compensation

ten years from the date of the grants. These options generally vest on the grant date or over a three year

period

The Company estimates the fair value

Expected Term

Expected Volatility

—The Company computes stock price volatility over expected terms based on reasonable estimates and comparable public companies as the Company had no trading history of its own common stock.

Risk-Free Interest Rate

—The Company bases the risk-free interest rate on the implied yield available on U.S. Treasury

zero-coupon

issues with an equivalent remaining term.

Expected Dividend

Income Taxes

Earnings Per Share

Accounts Receivable

Cash and Cash Equivalents

Digital Assets

Intangibles—Goodwill and Other

Fuel Deposits

The Company is required to maintain a cash deposit ($100 minimum) with a third-party broker for gas purchases and collection of revenues on the Company’s behalf.

Project Deposit

Miner Equipment Deposits

Property and Equipment

Impairment of Long-Lived Assets

Natural Gas Payable

The Company purchases natural gas through a third-party broker on a daily basis. This amount represents the unpaid balance due to the broker at December 31, 2020 and 2019.

Revenue Recognition

The Company recognizes revenue in accordance with ASC 606,

Revenue from Contracts with Customers

•

Step 1: Identify the contract, or contracts, with the customer;

•

Step 2: Identify the performance obligations in the contract;

•

Step 3: Determine the transaction price;

•

Step 4: Allocate the transaction price to the performance obligations in the contract; and

•

Step 5: Recognize revenue when, or as, the Company satisfies a performance obligation.

If a good or service is not distinct, the good or service is combined with other promised goods or services until a bundle of goods or services is identified that is distinct.

•

Variable consideration;

•

Constraining estimates of variable consideration;

•

The existence of a significant financing component in the contract;

•

Noncash consideration; and

•

Consideration payable to a customer.

Cryptocurrency mining and related activities revenue

Fair value of the cryptocurrency award received is determined using the quoted price on the Company’s primary exchange of the related cryptocurrency at the time of receipt.

Hosting revenue

Hashrate revenue

Power and capacity revenue

Advertising and Promotion Costs

Recent Accounting Pronouncements Not Yet Adopted

In December 2019, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”)

No. 2019-12,

Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes (“ASU

2019-12”),

which is intended to simplify various aspects related to accounting for income taxes. ASU

2019-12

removes certain exceptions to the general principles.

Recent Accounting Pronouncements Not Yet Adopted

In December 2019, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”)

No. 2019-12,

Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes (“ASU

2019-12”)

, which is intended to simplify various aspects related to accounting for income taxes. ASU

2019-12

Recent Accounting Pronouncements, Adopted

In February 2016, the FASB issued Accounting Standards Update ASU

No. 2016-02,

Leases (Topic 842), which requires lessees to recognize a

right-of-use

Recent Accounting Pronouncements, Adopted

In May 2014, the FASB issued

ASU 2014-09,

Revenue from Contracts with Customers

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2020

Accounting Policies [Abstract]

Summary of Asset Retirement Obligations

The following table reflects the details of the asset retirement obligations included in the consolidated balance sheets at December 31, 2020 and 2019:


	Coal Ash Pond
Balance at January 1, 2019	$	—
Initial recognition		2,135

Balance at December 31, 2019		2,135
Accretion		142

Balance at December 31, 2020	$	2,277

PROPERTY AND EQUIPMENT (Tables)

6 Months Ended

12 Months Ended

Jun. 30, 2021

Dec. 31, 2020

Property, Plant and Equipment [Abstract]

Summary of Property and Equipment, Net

Property and equipment, net consisted of the following at June 30, 2021 and December 31, 2020:


	Estimated Useful Lives		June 30, 2021			December 31, 2020
Plant infrastructure		15 – 39 years	$	34,216		$	33,944
Miners		5 years		24,146			10,236
Miner facility infrastructure		15 years		13,804			8,791
Land		N/A		300			300
Equipment		5 years		211			211
Software		3 years		186			66
Coal ash impoundment		4 years		2,135			2,135
Construction in process		N/A		4,104			3,989

				79,102			59,672
Less: Accumulated depreciation				(11,756	)		(8,986	)

			$	67,346		$	50,686

Property and equipment, net consisted of the following at December 31:


	Estimated Useful Lives		2020			2019
Plant infrastructure		15 – 39 years	$	33,944		$	31,387
Miners		5 years	$	10,236			—
Miner Facility		15 years		8,791			—
Land		N/A		300			300
Equipment		5 years		211			206
Software		3 years		66			66
Coal ash impoundment		4 years		2,135			2,135
Construction in process		N/A		3,989			7,392

				59,672			41,486
Less: Accumulated depreciation				(8,986	)		(4,422	)

			$	50,686		$	37,064

NOTES PAYABLE (Tables)

6 Months Ended

12 Months Ended

Jun. 30, 2021

Dec. 31, 2020

Debt Disclosure [Abstract]

Summary of Notes Payable

The following table provides information on the equipment financing agreements:


					Interest Rate			Initial Financing		Balance as of:
Note	Loan Date		Maturity Date		Interest Rate			Initial Financing		June 30, 2021			December 31, 2020
A		December 2020		June 2022		17.0	%	$	4,482	$	2,739		$	4,233
B		December 2020		June 2022		17.0	%		428		261			404
C		March 2021		November 2022		17.0	%		2,229		2,105			—
D		April 2021		December 2022		17.0	%		4,012		4,012			—
E – H		May 2021		October 2023		15.0	%		9,446		9,446			—

											18,563			4,637
Less: Current portion											(11,499	)		(3,273	)

										$	7,064		$	1,364

As of December 31, 2019, there were no notes payable outstanding. Notes payable consisted of the following at December 31, 2020:


Miner equipment note A	$	4,233
Miner equipment note B		404

		4,637
Less: Current portion		(3,273	)

	$	1,364

Summary of Future Maturities of Notes Payable

Future maturities of notes payable are as follows for the years ending December 31:


2021	$	3,273
2022		1,364

	$	4,637

RELATED PARTY TRANSACTIONS (Tables)

6 Months Ended

12 Months Ended

Jun. 30, 2021

Dec. 31, 2020

Summary of notes payable to related party

Notes payable to related party consisted of the following:


	June 30, 2021		December 31, 2020
Note payable to a related party due June 2021	$	—	$	2,382
Note payable to a related party due May 2021		—		1,191

	$	—	$	3,573
Less: Current Portion	$	—	$	(3,573	)

	$	—	$	—

Notes payable to related party consisted of the following at December 31:


	2020			2019
Note payable to a related party with interest at 8% per annum. All outstanding principal and accrued but unpaid interest is due June 2021.	$	2,382		$	—
Note payable to a related party with interest at 8% per annum. All outstanding principal and accrued but unpaid interest is due May 2021.		1,191			—
Notes payable converted into Senior Priority Units—Tranche 1 (see Note 6).		—			12,700

		3,573			12,700
Less: Current portion		(3,573	)		(5,000	)

	$	—		$	7,700

EQUITY BASED COMPENSATION (Tables)

6 Months Ended

Jun. 30, 2021

Share-based Payment Arrangement [Abstract]

Schedule of unvested restricted common stock unit awards activity

The Company’s unvested restricted common stock unit awards activity for the six months ended June 30, 2021 is summarized below:


	RSUs		Weighted Average Grant Date Fair Value
Unvested at December 31, 2020		—	$	—
Granted		616,920		6.25

Unvested at June 30, 2021		616,920		6.25

Schedule of stock options activity

The Company’s stock options activity for the six months ended June 30, 2021 is summarized below:


	Options			Weighted Average Exercise Price per Share		Weighted Average Remaining Contractual Life (in years)
Outstanding at December 31, 2020		—		$	—		—
Granted		716,968			6.01		10.00
Exercised		(160,000	)		6.25		0.10
Forfeited		(6,000	)		6.25		9.70

Outstanding at June 30, 202 1		550,968			6.01		9.68
Options vested and expected to vest as of June 30, 2021		550,968			6.01		9.68
Options vested and exercisable as of June 30, 2021		257,484		$	5.80		9.64

Schedule of weighted average assumptions relating to the valuation of stock options

The weighted average assumptions relating to the valuation of stock options granted for the six months ended June 30, 2021 were as follows:


Weighted Average fair value of grants	$	1.60
Expected volatility		35	%
Expected term (years)		4.5
Risk-free interest rate		0.4	%
Expected dividend yield		0.0	%

EARNINGS PER SHARE (Tables)

6 Months Ended

Jun. 30, 2021

Earnings Per Share [Abstract]

Schedule of basic earnings and diluted per share of common stock


	Three Months Ended June 30, 2021			Six Months Ended June 30, 2021
Numerator
Net income	$	3,518		$	4,797
Less: Net income attributable to the member units before the reorganization		(648	)		(648	)

Net income attributable to Greenidge	$	2,870		$	4,149

Denominator
Basic weighted average shares outstanding		28,320			28,283
Dilutive effect of equity awards		625			482
Dilutive effect of convertible preferred stock		6,480			6,480

Diluted weighted average shares outstanding		35,425			35,245

Earnings per share
Basic	$	0.10		$	0.15
Diluted	$	0.08		$	0.12

ORGANIZATION AND DESCRIPTION OF BUSINESS - Additional Information (Detail) - Greenidge Blocker Corp [Member] $ in Thousands	Oct. 02, 2019 USD ($) shares
Preferred unit, issued \| shares	15,000
Preferred unit, issuance value \| $	$ 15,000

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Summary of Asset Retirement Obligations (Detail) - USD ($) $ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Asset Retirement Obligation Disclosure [Abstract]
Beginning Balance	$ 2,277	$ 2,135	$ 2,135	$ 0
Initial recognition				2,135
Accretion	68	$ 74	142
Ending Balance	$ 2,345		$ 2,277	$ 2,135

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Detail) $ in Thousands		1 Months Ended		3 Months Ended		6 Months Ended		12 Months Ended
	Jan. 29, 2021 shares	Mar. 31, 2021 shares	Jan. 31, 2021 shares	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Dec. 31, 2020 USD ($) Bitcoins	Dec. 31, 2019 USD ($) Bitcoins	Dec. 31, 2018 USD ($)
Accounts receivable write off as uncollectible								$ 0	$ 0
Impairment Loss									100
Cash deposit								100
Deposit Contracts, Assets								$ 74	510
Percentage of annual emission expense and credit in the following year				50.00%		50.00%		50.00%
Asset retirement obligation				$ 2,345		$ 2,345		$ 2,277	2,135	$ 0
Discount rate on asset retirement obligations				5.00%		5.00%		5.00%
Discount rate on environmental trust liability during current period				4.50%		4.50%		4.50%
Environmental trust liability				$ 4,994		$ 4,994		$ 4,927	4,697
Provision for income taxes				1,397		2,129		0	0
Advertising and promotional costs								117	$ 0
Asset retirement obligation expense						$ 68	$ 74	$ 142
Share based compensation arrangement,expiration period						10 years
Vesting period						3 years
Stockholders equity note stock split	4-for-1	4-for-1
Number of digital assets \| Bitcoins								26.1	38.9
Impairment Of Long Lived Assets
Impairment Loss								$ 0	$ 0
Digital Assets
Impairment Loss								$ 100
New York [Member]
Purchase of voluntary carbon offset credits				684
Greenidge Common Stock [Member]
Shares issued in exchange for acquisition of ownership interests \| shares	7,000,000		7,000,000
Hash Rate Revenue [Member] \| Maximum [Member]
Revenue term period								180 days
Hash Rate Revenue [Member] \| Minimum [Member]
Revenue term period								30 days
Letter of Credit [Member]
Long-term Line of Credit				4,994		$ 4,994		$ 4,938	4,938
Cost of Sales [Member]
Emissions expense				402	$ 309	815	473	$ 1,738	$ 206
Other Income And Expense [Member]
Asset retirement obligation expense				$ 35	$ 32	$ 68	$ 74
GGHI Class B Common Stock [Member]
Number of shares after split \| shares	28,000,000	28,000,000

PROPERTY AND EQUIPMENT - Summary of Property and Equipment, Net (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 79,102	$ 59,672	$ 41,486
Less: Accumulated depreciation	(11,756)	(8,986)	(4,422)
Total	67,346	50,686	37,064
Plant infrastructure [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 34,216	$ 33,944	31,387
Plant infrastructure [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	15 years	15 years
Plant infrastructure [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	39 years	39 years
Miners [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 24,146	$ 10,236
Estimated Useful Lives	5 years	5 years
Miner facility [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 13,804	$ 8,791
Estimated Useful Lives	15 years	15 years
Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 300	$ 300	300
Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 211	$ 211	206
Estimated Useful Lives	5 years	5 years
Software [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 186	$ 66	66
Estimated Useful Lives	3 years	3 years
Coal ash impoundment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 2,135	$ 2,135	2,135
Estimated Useful Lives	4 years	4 years
Construction in progress [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 4,104	$ 3,989	$ 7,392

PROPERTY AND EQUIPMENT - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Abstract]
Depreciation expense	$ 1,603	$ 1,130	$ 2,864	$ 2,163	$ 4,564	$ 1,679

NOTES PAYABLE - Summary of Notes Payable (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Less: Current portion	$ (11,499)	$ (3,273)
Total	7,064	1,364
Equipment Finance Agreement [Member]
Notes Payable	18,563	4,637
Less: Current portion	(11,499)	(3,273)
Total	7,064	1,364
Miner Equipment Note A [Member] \| Equipment Finance Agreement [Member]
Notes Payable	$ 2,739	$ 4,233
Loan Date	December 2020
Maturity Date	June 2022	July 2022
Interest Rate	17.00%	17.00%
Initial Financing	$ 4,482	$ 4,482
Miner Equipment Note B [Member] \| Equipment Finance Agreement [Member]
Notes Payable	$ 261	$ 404
Loan Date	December 2020
Maturity Date	June 2022	June 2022
Interest Rate	17.00%	17.00%
Initial Financing	$ 428	$ 428
Miner Equipment Note C [Member] \| Equipment Finance Agreement [Member]
Notes Payable	$ 2,105
Loan Date	March 2021
Maturity Date	November 2022
Interest Rate	17.00%
Initial Financing	$ 2,229
Miner Equipment Note D [Member] \| Equipment Finance Agreement [Member]
Notes Payable	$ 4,012
Loan Date	April 2021
Maturity Date	December 2022
Interest Rate	17.00%
Initial Financing	$ 4,012
Miner Equipment Note E And H [Member] \| Equipment Finance Agreement [Member]
Notes Payable	$ 9,446
Loan Date	May 2021
Maturity Date	October 2023
Interest Rate	15.00%
Initial Financing	$ 9,446

NOTES PAYABLE - Summary of Future Maturities of Notes Payable (Detail) $ in Thousands	Dec. 31, 2020 USD ($)
Maturities of Long-term Debt [Abstract]
2021	$ 3,273
2022	1,364
Total	$ 4,637

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References + Details

NOTES PAYABLE - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
Principal borrowings			$ 4,637
Notes Payable [Member]
Interest expense	$ 202	$ 368	91
Equipment Finance Agreement [Member]
Principal borrowings			10,698
Equipment Finance Agreement [Member] \| Miner Equipment Note A [Member]
Debt instrument, face amount	$ 4,482	$ 4,482	$ 4,482
Interest rate per annum	17.00%	17.00%	17.00%
Risk premium fee			$ 482
Principal payments			222
Risk premium payments			$ 27
Maturity date		June 2022	July 2022
Equipment Finance Agreement [Member] \| Miner Equipment Note B [Member]
Debt instrument, face amount	$ 428	$ 428	$ 428
Interest rate per annum	17.00%	17.00%	17.00%
Principal payments			$ 24
Maturity date		June 2022	June 2022

FINANCE LEASE - Additional Information (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Mar. 11, 2021
Leases [Line Items]
Right of use asset at the lease commencement date	$ 1,310
Equipment [Member]
Leases [Line Items]
Right of use asset at the lease commencement date		$ 1,404
Finance lease obligation		$ 1,207
Lease end date	Aug. 31, 2022

RELATED PARTY TRANSACTIONS - Additional Information (Detail) - USD ($) $ in Thousands			3 Months Ended		6 Months Ended		12 Months Ended
	Mar. 19, 2021	Jul. 01, 2020	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019	Oct. 02, 2019
Related Party Transaction [Line Items]
Related party loan outstanding balance			$ 0		$ 0		$ 3,573	$ 12,700
Notes Payable Interest Rate At 8 With Due June 2021 [Member]
Related Party Transaction [Line Items]
Related party loan outstanding balance			0		0		2,382	0
Notes Payable Interest Rate At 8 With Due May 2021 [Member]
Related Party Transaction [Line Items]
Related party loan outstanding balance			0		0		1,191	0
Greenidge Blocker Corp [Member]
Related Party Transaction [Line Items]
Preferred unit, issued									15,000
Preferred unit, issuance value									$ 15,000
Letter of Credit [Member]
Related Party Transaction [Line Items]
Net proceeds from new line of credit	$ 10,000,000
Line of credit			4,994		4,994		4,938	4,938
Letter of Credit [Member] \| Empire Pipeline Incorporated [Member]
Related Party Transaction [Line Items]
Line of credit			3,630		3,630		3,630	3,630
Atlas [Member]
Related Party Transaction [Line Items]
Partners capital account, Acquisitions		$ 16,277
Limited guaranty payment			1,000		1,000
Atlas [Member] \| Letter of Credit [Member]
Related Party Transaction [Line Items]
Repayments of lines of credit							184	$ 206
Promissory Note Agreement [Member]
Related Party Transaction [Line Items]
Interest expense							$ 20
Promissory Note Agreement [Member] \| Atlas [Member]
Related Party Transaction [Line Items]
Debt instrument, interest rate, stated percentage							8.00%	8.00%
Interest expense			$ 0	$ 273	$ 22	$ 540	$ 553	$ 673
Promissory Note Agreement [Member] \| Atlas [Member] \| Notes Payable Interest Rate At 8 With Due June 2021 [Member]
Related Party Transaction [Line Items]
Maturity date							June 2021
Related party loan outstanding balance							$ 2,382
Promissory Note Agreement [Member] \| Atlas [Member] \| Notes Payable Interest Rate At 8 With Due May 2021 [Member]
Related Party Transaction [Line Items]
Maturity date							May 2021
Related party loan outstanding balance							$ 1,191

RELATED PARTY TRANSACTIONS - Summary of Notes Payable to Related Party (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Notes payable	$ 0	$ 3,573	$ 12,700
Less: Current Portion	0	(3,573)	(5,000)
Notes payable to related party	0	0	7,700
Note payable to a related party due June 2021 [Member]
Debt Instrument [Line Items]
Notes payable	0	2,382	0
Note payable to a related party due May 2021 [Member]
Debt Instrument [Line Items]
Notes payable	$ 0	1,191	0
Notes payable converted into Senior Priority Units—Tranche 1 [Member]
Debt Instrument [Line Items]
Notes payable		$ 0	$ 12,700

STOCKHOLDERS' EQUITY - Additional Information (Detail)			1 Months Ended			3 Months Ended		6 Months Ended		12 Months Ended
STOCKHOLDERS' EQUITY - Additional Information (Detail)	Mar. 26, 2021	Jan. 29, 2021 shares	Mar. 31, 2021 shares	Jan. 31, 2021 USD ($) $ / shares shares	Oct. 31, 2018 shares	Jun. 30, 2021 USD ($) $ / shares shares	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) $ / shares shares	Jun. 30, 2020 USD ($)	Dec. 31, 2020 USD ($) Tranches $ / shares shares	Dec. 31, 2019 USD ($) shares	Dec. 31, 2018 shares
Class of Stock [Line Items]
Capital units, authorized						520,000,000		520,000,000
Common stock, shares authorized						500,000,000		500,000,000		0
Common stock, par or stated value per share \| $ / shares						$ 0.0001		$ 0.0001		$ 0.0001
Preferred stock, shares authorized						20,000,000		20,000,000		0
Preferred stock, par or stated value per share \| $ / shares						$ 0.0001		$ 0.0001		$ 0.0001
Stockholders equity note stock split		4-for-1	4-for-1
Common stock, shares issued						28,320,000		28,320,000		0
Common stock, shares outstanding						28,320,000		28,320,000		0
Dividends, preferred stock, paid-in-kind percentage	12.00%
Common shares initial conversion price \| $ / shares								$ 25
Preferred Stock, liquidation preference per share \| $ / shares						$ 25		$ 25
Common units, voting rights										Common unit holders are entitled to one vote per common unit, except for such votes or consents that are reserved solely for the holders of preferred units
Shares based compensation, expenses \| $							$ 0		$ 0
Common units, issued										750	750
Common units, outstanding										750	750
Preferred units, voting rights										Preferred unit holders are entitled to one vote per preferred unit
Number of tranche \| Tranches										2
Partners capital account, exchange and conversions \| $										$ 13,926,000
Senior priority units, voting rights								Senior Priority Units had no voting rights.		Senior Priority Units have no voting rights
Common Stock
Class of Stock [Line Items]
Common units, voting rights										Common unit holders are entitled to one vote per common unit, except for such votes or consents that are reserved solely for the holders of preferred units.
Preferred Stock
Class of Stock [Line Items]
Preferred units, voting rights										Preferred unit holders were entitled to one vote per preferred unit.
Resticted Common Stock Unit
Class of Stock [Line Items]
Shares based payment arrangement, equity instrument other than option, grants in period								616,920
Shares based payment arrangement, equity instrument other than option, non vested units						616,920		616,920		0
Equity Incentive Plan
Class of Stock [Line Items]
Shares based payment arrangement, vesting rights percentage										100.00%
Equity Incentive Plan \| Resticted Common Stock Unit
Class of Stock [Line Items]
Shares based payment arrangement, equity instrument other than option, grants in period												750
Shares based payment arrangement, equity instrument other than option, vested in period										730	600
Shares based payment arrangement, equity instrument other than option, non vested units										20	150
Shares based compensation, expenses \| $						$ 0	$ 0	$ 0	$ 0	$ 0	$ 0
Greenidge Common Stock
Class of Stock [Line Items]
Shares issued in exchange for acquisition of ownership interests		7,000,000		7,000,000
Limited Liability Company LLC Common Units \| Equity Incentive Plan
Class of Stock [Line Items]
Shares based payment arrangement, shares purchased for award					1,250
Limited Liability Company LLC Senior Priority Unit \| Tranche One
Class of Stock [Line Items]
Partners capital account, exchange and conversions \| $								13,926		13,926,000
Limited Liability Company LLC Senior Priority Unit \| Tranche Two
Class of Stock [Line Items]
Partners capital account, acquisitions \| $								$ 16,276		$ 16,276,000
Common Class A
Class of Stock [Line Items]
Common stock, shares authorized						400,000,000		400,000,000
Common stock, par or stated value per share \| $ / shares						$ 0.0001		$ 0.0001
Common stock, shares issued						0		0
Common stock, shares outstanding						0		0
Common Class B
Class of Stock [Line Items]
Common stock, shares authorized						100,000,000		100,000,000
Common stock, par or stated value per share \| $ / shares						$ 0.0001		$ 0.0001
Common Stock, voting rights				ten votes
Common stock, shares issued						28,320,000		28,320,000
Common stock, shares outstanding						28,320,000		28,320,000
Series A Redeemable Convertible Preferred Stock
Class of Stock [Line Items]
Proceeds from issuance of private placement \| $				$ 37,113
Series A Redeemable Convertible Preferred Stock \| Private Placement
Class of Stock [Line Items]
Stock issued during period, Shares				1,620,000
Shares issued, Price per share \| $ / shares				$ 25
GGHI Class B Common Stock
Class of Stock [Line Items]
Number of shares after split		28,000,000	28,000,000

MEMBERS' EQUITY - Additional Information (Detail)	1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
MEMBERS' EQUITY - Additional Information (Detail)	Oct. 31, 2018 shares	Jun. 30, 2021 USD ($) shares	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) shares	Jun. 30, 2020 USD ($)	Dec. 31, 2020 USD ($) Tranches $ / shares shares	Dec. 31, 2019 USD ($) shares	Dec. 31, 2018 shares
Common units, Authorized						1,250
Preferred units, Authorized						39,228
Senior priority units units, Authorized						10,000
Common units, Voting rights						Common unit holders are entitled to one vote per common unit, except for such votes or consents that are reserved solely for the holders of preferred units
Shares based compensation, Expenses \| $			$ 0		$ 0
Common units, Issued						750	750
Common units, Outstanding						750	750
Preferred units, Voting rights						Preferred unit holders are entitled to one vote per preferred unit
Preferred units, Liquidation preference per unit \| $ / shares						$ 1
Number of tranche \| Tranches						2
Partners capital account, Exchange and conversions \| $						$ 13,926,000
Senior priority units, Voting rights				Senior Priority Units had no voting rights.		Senior Priority Units have no voting rights
Cumulatively accrued rate of return on the investment						8.00%
Senior priority units, Liquidation preference value \| $						$ 14,498,000
Limited Liability Company LLC Senior Priority Unit [Member] \| Tranche One [Member]
Partners capital account, Exchange and conversions \| $				$ 13,926		13,926,000
Limited Liability Company LLC Senior Priority Unit [Member] \| Tranche Two [Member]
Partners capital account, Acquisitions \| $				$ 16,276		$ 16,276,000
Restricted Stock Units (RSUs) [Member]
Shares based payment arrangement, Equity instrument other than option, Grants in period				616,920
Shares based payment arrangement, Equity instrument other than option, Non vested units		616,920		616,920		0
Equity Incentive Plan [Member]
Shares based payment arrangement, Vesting rights percentage						100.00%
Equity Incentive Plan [Member] \| Limited Liability Company LLC Common Units [Member]
Shares based payment arrangement, Shares purchased for award	1,250
Equity Incentive Plan [Member] \| Restricted Stock Units (RSUs) [Member]
Shares based payment arrangement, Equity instrument other than option, Grants in period								750
Shares based payment arrangement, Equity instrument other than option, Vested in period						730	600
Shares based payment arrangement, Equity instrument other than option, Non vested units						20	150
Shares based compensation, Expenses \| $		$ 0	$ 0	$ 0	$ 0	$ 0	$ 0

EMPLOYEE BENEFIT PLAN - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Matching contributions recognized as expense	$ 19	$ 48
Non elective contributions to the plan	$ 0	$ 0
First Salary Deferral Contribution [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer matching contribution percent of match	100.00%
Employer matching contribution percent of employees gross pay	3.00%
Second Salary Deferral Contribution [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer matching contribution percent of match	50.00%
Employer matching contribution percent of employees gross pay	2.00%

EQUITY BASED COMPENSATION - Schedule of Unvested Restricted Common Stock Unit Awards Activity (Detail)	6 Months Ended
	Jun. 30, 2021 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted	$ 1.60
Resctricted Common Stock units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested at December 31, 2020 \| shares	0
Granted \| shares	616,920
Unvested at June 30, 2021 \| shares	616,920
Unvested at December 31, 2020	$ 0
Granted	6.25
Unvested at June 30, 2021	$ 6.25

EQUITY BASED COMPENSATION - Schedule of Stock Options Activity (Detail) - Common Stock Options [Member]	6 Months Ended
	Jun. 30, 2021 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at December 31, 2020 \| shares	0
Granted \| shares	716,968
Exercised \| shares	(160,000)
Forfeited \| shares	(6,000)
Outstanding at June 30, 2020 \| shares	550,968
Options vested and expected to vest as of June 30, 2021 \| shares	550,968
Options vested and exercisable as of June 30, 2021 \| shares	257,484
Outstanding at December 31, 2020 \| $ / shares	$ 0
Granted \| $ / shares	6.01
Exercised \| $ / shares	6.25
Forfeited \| $ / shares	6.25
Outstanding at June 30, 2020 \| $ / shares	6.01
Options vested and expected to vest as of June 30, 2021 \| $ / shares	6.01
Options vested and exercisable as of June 30, 2021 \| $ / shares	$ 5.80
Granted	10 years
Exercised	1 month 6 days
Forfeited	9 years 8 months 12 days
Weighted Average Remaining Contractual Life (in years)	9 years 8 months 4 days
Options vested and expected to vest as of June 30, 2021	9 years 8 months 4 days
Options vested and exercisable as of June 30, 2021	9 years 7 months 20 days

EQUITY BASED COMPENSATION - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Feb. 28, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Line Items]
Vesting period			3 years
Stock-based compensation expense		$ 0		$ 0
Selling, General and Administrative Expenses [Member]
Disclosure Of Compensation Related Costs Sharebased Payments [Line Items]
Stock-based compensation expense	$ 406		$ 1,062
2021 Equity Plan [Member]
Disclosure Of Compensation Related Costs Sharebased Payments [Line Items]
Common stock reserved for issuance					3,831,112
Resticted Common Stock Unit
Disclosure Of Compensation Related Costs Sharebased Payments [Line Items]
Number of shares, granted			616,920
Fair market value of the awards granted			$ 3,856
Unrecognized compensation cost	$ 3,427		$ 3,427
Weighted average vesting period			3 years
Resticted Common Stock Unit \| 2021 Equity Plan [Member]
Disclosure Of Compensation Related Costs Sharebased Payments [Line Items]
Number of shares, granted	0		616,920
Vesting period			3 years
Common Stock Options [Member]
Disclosure Of Compensation Related Costs Sharebased Payments [Line Items]
Unrecognized compensation cost	$ 438		$ 438
Weighted average vesting period			1 year 2 months 12 days
Fair market value of award, Options granted			$ 1,151

EQUITY BASED COMPENSATION - Schedule of Weighted Average Assumptions Relating to the Valuation of Stock Options (Detail)	6 Months Ended
	Jun. 30, 2021 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted Average fair value of grants	$ 1.60
Expected volatility	35.00%
Expected term (years)	4 years 6 months
Risk-free interest rate	0.40%
Expected dividend yield	0.00%

EARNINGS PER SHARE - Additional Information (Detail) - shares	3 Months Ended	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Common stock oustanding	28,320,000	28,320,000	0
Antidilutive securities excluded from computation of earnings per share amount	0	0
Common Stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Common stock oustanding	0	0

EARNINGS PER SHARE - Schedule of Basic Earnings and Diluted Per Share of Common Stock (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended		12 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Numerator
Net income	$ 3,518	$ 1,279	$ (571)	$ (1,606)	$ 4,797	$ (2,177)	$ (3,290)	$ (8,475)
Net Income Loss Attributable To The Member Units Before The Reorganization	(648)				(648)
Net income attributable to Greenidge	$ 2,870				$ 4,149
Denominator
Basic weighted average shares outstanding	28,320				28,283
Dilutive effect of equity awards	625				482
Dilutive effect of convertible preferred stock	6,480				6,480
Diluted weighted average shares outstanding	35,425				35,245
Earnings per share
Basic	$ 0.10				$ 0.15
Diluted	$ 0.08				$ 0.12

COMMITMENTS AND CONTINGENCIES - Additional Information (Detail) $ in Thousands	1 Months Ended	6 Months Ended	12 Months Ended
	Sep. 30, 2020 USD ($) decatherms	Jun. 30, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Sep. 30, 2021 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Purchase Obligation		$ 38,361	$ 11,910	$ 7,860
Long term purchase commitment, Amount		$ 15,889	$ 5,959	$ 6,337
Contractual obligation, Per month amount	$ 158				$ 158
Contract terms		September 2030	September 2030
Notice period for contract termination		12 months	12 months
Initial period after which notice period for contract termination occurs		10 years	10 years
Long-term purchase commitment, Minimum quantity required \| decatherms	15,000
Committed secured financing on equipment amount		$ 23,526

CONCENTRATIONS - Additional Information (Detail)	3 Months Ended		6 Months Ended		12 Months Ended
CONCENTRATIONS - Additional Information (Detail)	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Sales Revenue Net [Member] \| Customer Concentration Risk [Member] \| One Major Customer [Member]
Concentration risk percentage	13.00%	27.00%	15.00%	27.00%	35.70%	90.80%
Sales Revenue Net [Member] \| Customer Concentration Risk [Member] \| Operator Customer [Member]
Concentration risk percentage	75.00%	61.00%	73.00%	65.00%	57.00%
Cost of Goods and Service Benchmark [Member] \| Supplier Concentration Risk [Member] \| One Major Customer [Member]
Concentration risk percentage	56.00%	52.00%	59.00%	59.00%	56.80%	55.60%
Accounts Receivable [Member] \| Customer Concentration Risk [Member] \| One Major Customer [Member]
Concentration risk percentage			100.00%		100.00%

SUBSEQUENT EVENTS - Additional Information (Detail)	1 Months Ended
SUBSEQUENT EVENTS - Additional Information (Detail)	May 31, 2021 USD ($)	Mar. 31, 2021 USD ($) shares	Jan. 31, 2021 USD ($) $ / shares shares	Jun. 30, 2021 $ / shares shares	Feb. 28, 2021 shares	Dec. 31, 2020 $ / shares shares
Subsequent Event [Line Items]
Common stock, Shares authorized				500,000,000		0
Common stock, Par or stated value per share \| $ / shares				$ 0.0001		$ 0.0001
Preferred stock, Shares authorized				20,000,000		0
Preferred stock, Par or stated value per share \| $ / shares				$ 0.0001		$ 0.0001
Common Class A [Member]
Subsequent Event [Line Items]
Common stock, Shares authorized				400,000,000
Common stock, Par or stated value per share \| $ / shares				$ 0.0001
Common Class B [Member]
Subsequent Event [Line Items]
Common stock, Shares authorized				100,000,000
Common stock, Par or stated value per share \| $ / shares				$ 0.0001
Series A Redeemable Convertible Preferred Stock [Member]
Subsequent Event [Line Items]
Proceeds from issuance of private placement \| $			$ 37,113
Private Placement [Member] \| Series A Redeemable Convertible Preferred Stock [Member]
Subsequent Event [Line Items]
Shares issued, Price per share \| $ / shares			$ 25
Greenidge Generation Holdings Inc [Member]
Subsequent Event [Line Items]
Common stock, Shares authorized			200,000,000
Common stock, Par or stated value per share \| $ / shares			$ 0.1000
Preferred stock, Shares authorized			20,000,000
Preferred stock, Par or stated value per share \| $ / shares			$ 0.1000
Subsequent Event [Member]
Subsequent Event [Line Items]
Proceeds from potential investment \| $		$ 10,000,000,000
Subsequent Event [Member] \| Equity Incentive Plan [Member]
Subsequent Event [Line Items]
Debt instrument, Face amount \| $	$ 13,947,000
Investment, Interest rate	15.00%
Subsequent Event [Member] \| Equity Incentive Plan [Member] \| Notes Receivable [Member]
Subsequent Event [Line Items]
Investment maturity date	Oct. 31, 2023
Receivables, Payment terms	The notes require variable amounts of interest only payments for the first six to eight months of each agreement and variable payments of monthly principal and interest through the maturity date in October 2023
Subsequent Event [Member] \| Greenidge Generation Holdings Inc [Member] \| Common Class A [Member]
Subsequent Event [Line Items]
Stock issued during period shares, Stock split		(3,831,112)
Stock split ratio		4
Subsequent Event [Member] \| Greenidge Generation Holdings Inc [Member] \| Equity Incentive Plan [Member]
Subsequent Event [Line Items]
Common stock reserved					957,778
Subsequent Event [Member] \| Greenidge Generation Holdings Inc [Member] \| Private Placement [Member] \| Series A Redeemable Convertible Preferred Stock [Member]
Subsequent Event [Line Items]
Stock issued during period shares, Conversion of convertible securities			1,620,000
Shares issued, Price per share \| $ / shares			$ 25
Proceeds from issuance of private placement \| $			$ 37,590,000
Subsequent Event [Member] \| Asset Contribution And Exchange Agreement [Member] \| Greenidge Generation Holdings Inc [Member] \| Common Class B [Member]
Subsequent Event [Line Items]
Stock issued during period shares, Stock split		(28,000,000)
Stock split ratio		4
Stock issued during period shares, Conversion of convertible securities		7,000,000