Overview
- Following Wednesday’s cabinet approval, the renamed Building Modernisation Act (GMG) starts its parliamentary run with key rules published and immediate pushback underway.
- Central changes remove the 65%‑renewables requirement for new systems and keep oil and gas installs possible, tied to a “Bio‑Staircase” that phases in climate‑neutral fuel shares from 10% in 2029 to 60% by 2040.
- Landlord‑tenant costs would shift from 2028 and 2029, with owners required to cover half of CO2 charges, gas network fees, and future biofuel premiums to curb bill‑shifting onto renters.
- Germany’s National Regulatory Control Council called the draft poorly written and hard to apply, warning of heavy bureaucracy, four‑day consultations for stakeholders, and rules so complex many owners would need paid advisors.
- Social and climate groups say allowing new fossil boilers risks long‑term cost traps as CO2 prices rise, and the bill now faces Bundestag debates over summer and a Bundesrat review in October, with a climate impact check slated for 2030.