The Greens warned the federal government that overly sweeping changes to the heating law would be too drastic. “If they abolish the 65‑percent rule, it will deepen our dependence and put homeowners, who look the other way, into a cost trap if gas network tariffs rise” Michael Kellner, spokesperson for the Greens’ energy‑policy caucus, told the “Rheinische Post” (Friday edition).
Kellner said that heating contractors are already far ahead of the government: industry and trade are prepared for a modernization offensive. “When it comes to heating, we should not depend on gas from Trump or Putin” he added.
Industry representatives called on policymakers to present regulations swiftly. “We expect the federal government to keep sensible and working regulations in place” said Martin Sabel, chief executive of the Federal Association of Heat Pumps, to the newspaper. “The heat pump was the best‑selling heating system in 2025, showing that hand‑craft, industry, and many consumers have oriented themselves toward the current Building Energy Act”. In his view, the building sector offers “considerable potential for economic growth from domestic value creation”.
In the coalition agreement, the black‑red coalition agreed to repeal the heating law and replace it with the Building Modernisation Act. The core of the old heating law was that, moving forward, 65 percent of heating energy must come from renewable sources. The main point of contention is whether that 65‑percent target will also remain in the new Building Modernisation Act.
