Ключевые слова: arable, bio, bioenergy, biofuel, biogas, biogas plant, biokraft, biomass, carbon dioxide, co2, district heating, electricity generation, energy provider, energy supply, environment, environmental pollution, environmental protection, facility, farmer, farming, fermenter, field, gas, green, natural gas, organic farmer, panorama, power station, power supply, raw material, renewable, silo,