0001852016 2025-02-14 2025-02-14 0001852016 us-gaap:CapitalUnitsMember 2025-02-14 2025-02-14 0001852016 us-gaap:CommonClassAMember 2025-02-14 2025-02-14 0001852016 us-gaap:WarrantMember 2025-02-14 2025-02-14 AltEnergy Acquisition Corp NONE NONE NONE false 0001852016 8-K 2025-02-14 DE 001-40984 86-2157013 600 Lexington Avenue 9th Floor New York NY 10022 203 299-1400 true false false false Units, each consisting of one share of Class A common stock and one- half of one Warrant AEAEU Class A common stock, par value $0.0001 per share AEAE Warrants, each whole warrant exercisable for one share of Class A common stock at an exercise price of $11.50 AEAEW true false