0001883984 2026-07-30 2026-07-30 false 0001883984 --12-31 8-K 2026-07-30 ALTERNUS CLEAN ENERGY, INC. DE 001-41306 87-1431377 17 State Street, Suite 4000 New York NY 10004 212 739-0727 false false false false Common Stock, par value $0.0001 per share ALCE true false