v3.26.1
Cover
Jul. 21, 2026
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Jul. 21, 2026
Entity File Number 000-55610
Entity Registrant Name GREENBACKER RENEWABLE ENERGY CO LLC
Entity Central Index Key 0001563922
Entity Tax Identification Number 80-0872648
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 230 Park Avenue
Entity Address, Address Line Two Suite 1560
Entity Address, City or Town New York
Entity Address, State or Province NY
Entity Address, Postal Zip Code 10169
City Area Code (646)
Local Phone Number 237-7884
Written Communications true
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Limited liability company interests
Trading Symbol None
Security Exchange Name NONE
Entity Emerging Growth Company false