KfW 522 — Heating Subsidy for Businesses, Non-Residential Buildings (Heizungsförderung)

KfW 522, Heizungsförderung für Unternehmen, Nichtwohngebäude, sits under the Bundesförderung für effiziente Gebäude umbrella at KfW Bankengruppe and is administered on behalf of BMWK. It is the non-residential heating route in Germany's federal building-efficiency package, and the source material describes it as open and active. The program is aimed at climate-friendly heating in non-residential buildings rather than general construction finance. The instrument is a direct grant, with a base rate of 30% of eligible costs, a 5% efficiency bonus for qualifying heat pumps, and a maximum subsidy of 35%. Biomass systems that meet the dust-emission standard can also receive a flat EUR 2,500 emissions-reduction surcharge, and the eligible-cost ceiling scales with heated net floor area from EUR 30,000 up to 150 square meters through higher per-square-meter thresholds above that. Applicants include companies, contractors, sole proprietors, freelancers, municipal enterprises, nonprofits, churches, partnerships, private-law entities, and private individuals for non-residential buildings. Applications must be filed in Meine KfW before work begins, projects must be completed within 36 months, and documentation is due within six months of the final invoice. The measure has to improve building energy efficiency or raise the renewable share of final energy use, and the installation package must include system optimization such as hydraulic balancing. In practice, the strongest cases are non-residential buildings where heating replacement is part of a clear decarbonization and efficiency plan.

Each grant below is a distinct funding opportunity with its own eligibility, scope, and deliverables.