Overview
- The Union–SPD coalition agreed on the Buildings Modernization Act, scrapping the 65% renewables rule for new systems and again permitting unrestricted installation of gas and oil boilers.
- Energy suppliers would be required to blend in rising shares of green fuels from 2028, while a consumer-side “Bio‑Treppe” starts at a 10% bio share in 2029, with precise quota paths still undefined.
- The economy ministry said core federal subsidies for cleaner heating (BEG) will remain in place at least through 2029, yet key implementation details, including tenant protections against higher ancillary costs, are unresolved.
- Scientists and NGOs forecast sharply weaker emissions cuts than under the previous law, noting only about 2 million tonnes CO2 savings in 2030, and groups such as Deutsche Umwelthilfe are weighing legal action over climate compliance.
- Market data indicate biogas tariffs average about 25% above standard gas, and experts warn limited green‑fuel supply, rising CO2 prices and network charges could raise tenant bills and dampen the heat‑pump rollout.