4
Electrical energy, natural gas (fuel)
35
Arranging of energy, electricity, gas and water supply contracts; Retail/wholesale services, including via the Internet, in relation to gas; Consumer advice, business consultancy, professional business consultancy, all in connection with the purchase and consumption of electrical energy, gas or water
36
Barter,Including via the Internet, in relation to electrical energy
39
Conducting, transport, delivery, transmission and distribution of electrical energy, power, gas or water; Power supply (delivery); Gas supply (delivery)
40
Generation of energy; Generating gas by converting materials
42
Scientific and technological services, in particular in the energy sector; Engineering services in the field of electrical power and natural gas production; Consultancy relating to the conservation of energy; Technical consultancy in connection with the purchase and consumption of energy, gas or water