Fuel oils; industrial oils; alcohol [fuel]; benzine; biofuel; biofuels; coal (fuel); motor spirits; motor fuels; fuels; fuels of biological origin; gaseous fuels; liquid fuels; mineral fuels; electrical energy; natural gas; fuel gas.

Pumping and extraction of oil; construction of wind power plants; construction of structures for the storage of natural gas; construction of structures for the storage of crude oil; construction of structures for the production of natural gas; construction of structures for the production of crude oil; construction of hydroelectric factories; construction of geothermal energy installations; installation of electrical machinery and generators; installation and maintenance of thermal solar installations; installation and repair of electric apparatus; maintenance of electronic apparatus; drilling of wells; repair or maintenance of energy distributors or control machines and apparatus; service stations [refueling and maintenance].

Distribution of energy; renewable energy distribution; water distribution and supply; distribution and transmission of electricity; gas distribution services.

Rental of electricity generators; electricity generation; generation of electricity from wind energy; conversion of nuclear fuels; processing of combustible materials; generation of electricity from solar energy; energy production; production of gas and electricity; recycling of nuclear fuels; refining of fuels; refining of combustible materials; reprocessing of nuclear fuels; gas production services; natural gas treatment services; water purification [treatment]; waste treatment [transformation]; treatment of nuclear waste; treatment of oil (petroleum).