Biomethane Compressed Biogas Anaerobic Digestion Methane Production Biogas Production Energy Policy Biogas Plants Waste-to-Energy Technologies Clean Fuels Investment Strategies Energy Management Biomethane Production Rural Biogas Plants Sustainable Energy Sources Biomass Gasification Biomethane Tariffs Heating Solutions Economic Impact Sustainable Fuels Electricity Generation Biogas Projects CNG Waste Management Decarbonization Biometanization Compressed Bio-Gas Energy Production Sustainable Development Energy Transition Ethanol Production Production Challenges Grüngas Imports Climate Policy Heating Technologies Heating Fossil Fuels Green Gas Quota Carbon-Negative Technology Biomethane Heating Methane Utilization Production Agricultural Support Biogas Systems Synthetic Methanol Joint Ventures Biometano