4
Energy (electrical -); electrical energy; electrical energy from solar power; electrical energy from renewable sources; electrical energy from wind power; electrical energy from non-renewable sources; electricity; biomass fuel; gas fuels; gas [fuel]; fuel gas; gases for use as fuel
39
Storage, transmission, distribution, collection and supply of energy; services for the transmission, distribution and supply of energy generated from renewable sources; distribution and supply of electricity generated from renewable sources; distribution of renewable energy
40
Production of electrical power from renewable sources; production of energy from renewable sources; generation of energy from renewable sources; services for the generation of energy from renewable sources; generation of energy from wind power; generation of power from renewable sources; generation of power from wind turbines; generation of power from on-shore and off-shore wind farms; generation of energy from tidal and wave sources; preparation of bio-fuels from renewable sources; operating power generation plants; production of energy by power plants; production of hydroelectric power; generation of electricity from geothermal energy; generation of electricity from solar energy; information, advisory and consultancy services relating to the aforesaid services
42
Technological consulting services in the field of alternative energy generation; providing technological information about environmentally-conscious and green innovations; design and development of regenerative energy generation systems; professional consultancy relating to the conservation of energy