IC 037. US 100 103 106. G & S: Construction, installation, assembly, maintenance and repair of power stations, gas generators, pipelines and installations for generating electrical and thermal energy from renewable energy sources, in particular from wind energy, water energy, solar energy, geothermal heat and biomass, and installations for generating biogas from biomass and valuable materials, in particular from renewable raw materials; installation of equipment that generates electricity and distributes gas

IC 039. US 100 105. G & S: Transport, transmission, distribution and forwarding of electrical energy and gas, in particular, natural gas and biogas; transmission of electricity and gas

IC 040. US 100 103 106. G & S: Generating energy, in particular electrical energy, thermal energy and steam; generating electrical, thermal energy and steam from renewable energy sources, in particular from wind energy, water energy, solar energy, geothermal heat and biomass; generating gas from biomass and valuable materials, in particular renewable raw materials; generating of bio natural gas