35
Advertising; Business management; Business administration; Office functions; Trading in the energy sector; Management support and consultancy in the energy sector; Import-export agencies in the field of energy
37
Building construction; Repair in the field of energy supply; Installation services in the field of energy supply; Civil engineering construction; Mechanical engineering and construction in the field of energy technology; Installation, assembly, maintenance and repair of power stations, gas generators, pipelines and installations for the production of energy; Laying of cables; Laying of cables; Mains laying; Dismantling of power lines; Installation of electrical and generating machinery; Installation of electrical and generating machinery; Repair or maintenance of power generators; Repair services for electric generators and wind turbines; Installation of electrical and generating machinery
39
Transport; Packaging and storage of goods; Electricity supply and distribution; Distribution of energy; Information and consultancy in relation to energy distribution and electricity distribution; Electricity distribution; Distribution of power
40
Treatment of materials in the field of energy supply; Generation of power; Energy production; Generation of gas and electricity; Electricity generating; Generation of electricity from solar energy; Rental of electricity generators; Rental of electricity generators; Rental of power-generating equipment; Leasing of energy generating equipment
42
Scientific and technological services and research and design relating thereto; Industrial analysis and research services; Design and development of computer hardware and software; Development, Research and Consultancy in the energy sector; Energy auditing; Developing of integrated energy concepts; Technological consulting services in the field of alternative energy generation; Energy auditing; Energy efficiency advisory services; Recording data relating to energy consumption in buildings; Development of power assemblies; Engineering services in the field of electrical power and natural gas production