The law permits homeowners to choose heating systems, including oil and gas, diverging from previous mandates requiring at least 65% renewable energy use. Starting in 2028, landlords will share heating costs with tenants, and by 2029, new oil and gas systems must gradually incorporate biogenic fuels. Critics, including the Greens and environmental organizations, argue the law undermines climate goals and violates constitutional standards. The government has yet to provide concrete data on the law’s potential impact on CO2 emissions and compliance with EU regulations.