KfW 270 is a loan (not a grant) for private individuals, companies and municipalities for renewable systems, including PV with storage. The rate depends on risk class and collateral (sources quote 3.3–11.6%). Apply through your bank before buying or extending the system.
State programmes: only a few remain active in 2026 (Bavaria, Lower Saxony, Thuringia and Saxony-Anhalt ended theirs); check the local programme before quoting.
An information digest prepared from official announcements and industry press; conditions change — always check the official source and the date of the entry before advising a customer.