Sep. 29, 2022
Document Information [Line Items]  
Document Type 8-K
Document Period End Date Sep. 28, 2022
Entity Registrant Name Altus Power, Inc.
Entity Incorporation, State or Country Code DE
Entity File Number 001-39798
Entity Tax Identification Number 85-3448396
Entity Address, Address Line One 2200 Atlantic Street, 6th Floor
Entity Address, City or Town Stamford
Entity Address, State or Province CT
Entity Address, Postal Zip Code 06902
City Area Code 203
Local Phone Number 698-0090
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company true
Entity Ex Transition Period false
Entity Central Index Key 0001828723
Amendment Flag false
Common Class A  
Document Information [Line Items]  
Title of 12(b) Security Class A common stock, par value $0.0001 per share
Trading Symbol AMPS
Security Exchange Name NYSE
Document Information [Line Items]  
Title of 12(b) Security Warrants to purchase one share of Class A common stock, each at an exercise price of $11.00
Trading Symbol AMPS WS
Security Exchange Name NYSE