Subsequent Events	12 Months Ended
Dec. 31, 2023
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events The Company has evaluated subsequent events from December 31, 2023 through March 14, 2024, which is the date the audited consolidated financial statements were available to be issued. Other than the subsequent event disclosed below, there are no subsequent events requiring recording or disclosure in the consolidated financial statements. Vitol Acquisition On January 31, 2024, the Company, through its wholly-owned subsidiary, Altus Power, LLC, acquired an 84 MW portfolio of 20 operating solar energy facilities located across five US states (the “Vitol Acquisition”). The portfolio was acquired from Vitol Solar I LLC ("Vitol") through an acquisition of 100% of the membership interests in various project companies for the total purchase price of approximately $119.7 million, and was entered into by the Company to grow its portfolio of solar energy facilities. The purchase price and associated transaction costs were funded by cash on hand. The purchase price is also subject to customary adjustments for working capital and other items. The transaction will be accounted for as a business combination under ASC 805. The Company is in the process of completing its appraisals of tangible and intangible assets relating to this acquisition and the allocation of the purchase price to the assets acquired and liabilities assumed will be completed once the appraisal process has been finalized.

Subsequent Events

12 Months Ended

Dec. 31, 2023

The Company has evaluated subsequent events from December 31, 2023 through March 14, 2024, which is the date the audited consolidated financial statements were available to be issued. Other than the subsequent event disclosed below, there are no subsequent events requiring recording or disclosure in the consolidated financial statements.

Vitol Acquisition

On January 31, 2024, the Company, through its wholly-owned subsidiary, Altus Power, LLC, acquired an 84 MW portfolio of 20 operating solar energy facilities located across five US states (the “Vitol Acquisition”). The portfolio was acquired from Vitol Solar I LLC ("Vitol") through an acquisition of 100% of the membership interests in various project companies for the total purchase price of approximately $119.7 million, and was entered into by the Company to grow its portfolio of solar energy facilities. The purchase price and associated transaction costs were funded by cash on hand. The purchase price is also subject to customary adjustments for working capital and other items.

The transaction will be accounted for as a business combination under ASC 805. The Company is in the process of completing its appraisals of tangible and intangible assets relating to this acquisition and the allocation of the purchase price to the assets acquired and liabilities assumed will be completed once the appraisal process has been finalized.