Cover Page - shares	6 Months Ended
	Jun. 30, 2022	Aug. 12, 2022
Document Information [Line Items]
Entity Registrant Name	Greenidge Generation Holdings Inc.
Document Type	10-Q
Amendment Flag	false
Document Quarterly Report	true
Document Fiscal Year Focus	2022
Document Period End Date	Jun. 30, 2022
Current Fiscal Year End Date	--12-31
Entity Central Index Key	0001844971
Document Transition Report	false
Entity File Number	001-40808
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	86-1746728
Entity Address, Address Line One	135 Rennell Drive
Entity Address, City or Town	3rd FloorFairfield
Entity Address, State or Province	CT
Entity Address, Postal Zip Code	06890
City Area Code	203
Local Phone Number	718-5960
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 Shell Company	false
Entity Ex Transition Period	false
Document Fiscal Period Focus	Q2
Common Class A [Member]
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		13,392,448
Common Class B [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		28,526,372
8.50% Senior Notes due 2026 [Member]
Document Information [Line Items]
Title of 12(b) Security	8.50% Senior Notes due 2026
Trading Symbol	GREEL
Security Exchange Name	NASDAQ