Investment in unconsolidated joint venture	3 Months Ended
	Mar. 31, 2022
Equity Method Investments and Joint Ventures [Abstract]
Investment in unconsolidated joint venture	Investment in unconsolidated joint ventureIn August 2019, the Company entered into an agreement with Holtec Power, Inc. (“Holtec”) to form the unconsolidated joint venture HI-POWER LLC (“Hi-Power” or “JV”). The JV was formed in order to manufacture the products for all of the Company’s projects in North America. Accordingly, the Company had purchased battery storage systems and spare parts from the JV. The facility is located in Turtle Creek, Pennsylvania. The Company’s financial commitment to the JV upon inception was $4,100 in the form of a combination of cash and special purpose manufacturing equipment. Eos’s initial ownership interest was 49%. On April 9, 2021, the Company acquired the remaining 51% ownership interest and Hi-Power became a wholly-owned subsidiary thereafter. Refer to Note 2 for the acquisition details. For the three months ended March 31, 2022 and 2021, contributions made to the JV were $— and $4,000, respectively. The investment income recognized from the unconsolidated joint venture under the equity method of accounting was $— and $440 for the three months ended March 31, 2022 and 2021, respectively.