Under the revised legislation, homeowners may install oil and gas heating systems, incurring specific costs related to fossil fuel usage. Starting in 2028, landlords will share heating costs with tenants, including CO2 pricing and gas network fees. By 2029, new oil and gas systems must gradually incorporate biogenic fuels, aiming for a 60% share by 2040. Additionally, the law mandates that fuel suppliers offer climate-friendly alternatives, including various types of hydrogen. Municipalities will also be required to outline plans for expanding district heating and hydrogen networks.