Cover Page - USD ($)	12 Months Ended
	Dec. 31, 2022	Mar. 30, 2023	Jun. 30, 2022
Document Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2022
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-40808
Entity Registrant Name	Greenidge Generation Holdings Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	86-1746728
Entity Address, Address Line One	135 Rennell Drive
Entity Address, Address Line Two	3rd Floor
Entity Address, City or Town	Fairfield
Entity Address, State or Province	CT
Entity Address, Postal Zip Code	06890
City Area Code	315
Local Phone Number	536-2359
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
ICFR Auditor Attestation Flag	false
Entity Shell Company	false
Entity Public Float			$ 35,114,779
Documents Incorporated by Reference	None.
Entity Central Index Key	0001844971
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Amendment Flag	false
Class A Common Stock, $0.0001 par value
Document Information [Line Items]
Title of 12(b) Security	Class A Common Stock, $0.0001 par value
Trading Symbol	GREE
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding		31,271,755
8.50% Senior Notes due 2026
Document Information [Line Items]
Title of 12(b) Security	8.50% Senior Notes due 2026
Trading Symbol	GREEL
Security Exchange Name	NASDAQ
Common Class B
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		28,526,372