German Cabinet Scraps Green Heating Rule in Bid to Revive Building Investment

Germany will replace its 2023 heating law, removing the requirement for new heating systems to use at least 65% renewable energy.
New gas and oil systems will need to blend climate-neutral fuels from 2029, rising from 10% to 60% by 2040.
The reform keeps Germany’s 2045 climate neutrality target in place, while shifting the policy burden toward building modernization, fuel blending, and power capacity markets.

Germany’s cabinet agreed on Wednesday to replace one of the country’s most disputed climate laws, as Chancellor Friedrich Merz’s government seeks to revive construction, calm household concerns, and reset investor confidence in Europe’s largest economy.

The decision targets the 2023 heating law, which required new building heating systems to use at least 65% renewable energy. That rule became a flashpoint in German politics. Critics argued it would force households to abandon gas and oil boilers and pay thousands of euros for cleaner systems.

Economy Minister Katherina Reiche said the new approach would reduce uncertainty for companies planning construction and building restoration.

“With it, we are creating investment security, we are creating planning security, we are enabling technological openness and flexibility in the choice of heating system,” she told reporters.

The cabinet also backed measures to create a market for standby power generation. Under the plan, operators of power stations or storage facilities would receive payments not only for supplying electricity, but also for keeping capacity available when renewable output drops.

That policy is central to Germany’s coal phaseout. It aims to keep the grid stable during periods of low wind or weak sunshine.

A New Building Modernisation Law

The government plans to replace the heating law with a new building modernisation law before parliament’s summer recess.

Under the cabinet agreement, households will be allowed to keep existing boilers if they do not choose to move to alternatives such as heat pumps, district heating, or biomass systems. The new proposal also drops the blanket requirement for mandatory renewable components in new heating systems.

Instead, the law will require new gas and oil systems to gradually use climate-neutral fuels from 2029. The share will begin at 10% and rise to 60% by 2040.

For executives and investors, the shift matters because Germany’s building sector sits at the intersection of energy security, household affordability, and climate delivery. Buildings remain one of Europe’s hardest sectors to decarbonize. They also require large upfront capital, skilled labor, and long planning timelines.

By easing the 65% renewable rule, Merz’s cabinet is trying to unlock investment in renovation and construction. Yet the government is also taking on execution risk. Fuel blending targets must become credible, available, and affordable if the revised law is to support Germany’s 2045 climate neutrality goal.

Industry Welcomes Certainty, Greens Warn of Climate Retreat

Germany’s BDI industry federation welcomed the shift, calling it “an important step towards finally getting investment back on track.” The group said the change could support construction activity and help modernize Germany’s building stock.

The response from climate-focused lawmakers was sharply different. Greens parliamentary leader Katherina Droege criticized the cabinet decision as “a complete abandonment of Germany’s climate targets.”

Her party had driven the original heating law under former Chancellor Olaf Scholz. For the Greens, the rollback risks weakening one of Germany’s most visible household climate policies.

The political backdrop is also important. Merz’s conservative Christian Democrats and their Social Democrat coalition partners are under pressure after months of disputes over tax, pension, health, and welfare reforms. At the same time, support for the far-right Alternative for Germany party has surged.

That pressure has pushed the coalition to prioritize visible economic action. The heating law replacement now becomes a test of whether Germany can soften politically toxic climate rules without weakening its climate trajectory.

Power Capacity Becomes the Next Climate Finance Test

The cabinet’s standby power proposal adds another layer to Germany’s energy transition strategy.

As coal exits the system and renewables provide a larger share of electricity, Germany needs dispatchable backup capacity. Paying plants and storage operators for availability could help prevent price spikes and reliability risks.

For investors, that creates a new revenue model around flexibility, storage, and firm capacity. For policymakers, it raises questions about cost allocation, technology eligibility, and how to prevent fossil fuel lock-in.

The revised heating policy also aligns with parts of the European Union’s Buildings Directive, which mandates all new buildings to be zero-emission from 2030. Germany has reiterated its 2045 climate neutrality target, but the route is changing.

The broader lesson for the C-suite is clear. Climate regulation in Europe is not disappearing. It is becoming more politically contested, more technology-neutral, and more tied to affordability.

Germany’s decision could influence other markets facing similar pressure. Governments want to decarbonize buildings and power systems, but voters and companies are demanding lower costs and clearer investment rules. The next phase of Europe’s climate agenda may depend less on ambition alone, and more on whether policy can survive contact with households, industry, and the ballot box.