CONCENTRATIONS	3 Months Ended
Mar. 31, 2022
Risks and Uncertainties [Abstract]
Concentrations	14. CONCENTRATIONS The Company has one power customer, NYISO, that accounted for 16% and 19% of its revenue for the three months ended March 31, 2022 and 2021, respectively. For cryptocurrency datacenter operations, 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 on a daily basis. Revenue from one of the Company’s pool operator customers accounted for approximately 50% of total revenue for the three months ended March 31, 2022. Revenue from a different pool operator customer accounted for approximately 12% and 72% of total revenue for the three months ended March 31, 2022 and 2021, respectively. The Support Services segment's largest customer accounted for approximately 16% of the Company's consolidated revenue during the three months ended March 31, 2022 and also accounted for approximately 73% and 67% of the Company's consolidated accounts receivable balance at March 31, 2022 and December 31, 2021, respectively. Another customer of the Support Services segment accounted for 11% of the receivable balance at December 31, 2021. The Company has one natural gas vendor that accounted for approximately 45% and 59% of cost of revenue for the three months ended March 31, 2022 and 2021, respectively.

CONCENTRATIONS

3 Months Ended

Mar. 31, 2022

14. CONCENTRATIONS

The Company has one power customer, NYISO, that accounted for 16% and 19% of its revenue for the three months ended March 31, 2022 and 2021, respectively.

For cryptocurrency datacenter operations, 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 on a daily basis. Revenue from one of the Company’s pool operator customers accounted for approximately 50% of total revenue for the three months ended March 31, 2022. Revenue from a different pool operator customer accounted for approximately 12% and 72% of total revenue for the three months ended March 31, 2022 and 2021, respectively.

The Support Services segment's largest customer accounted for approximately 16% of the Company's consolidated revenue during the three months ended March 31, 2022 and also accounted for approximately 73% and 67% of the Company's consolidated accounts receivable balance at March 31, 2022 and December 31, 2021, respectively. Another customer of the Support Services segment accounted for 11% of the receivable balance at December 31, 2021.

The Company has one natural gas vendor that accounted for approximately 45% and 59% of cost of revenue for the three months ended March 31, 2022 and 2021, respectively.