04
Electrical energy; electrical energy from solar power;
electrical energy from wind power; electrical energy from
renewable sources; electricity; biofuels
07
Uninterruptible power supplies [machines] for the generation
of electrical energy; wind-powered electricity generators;
electrical generator stations; generators of electricity;
power installations [generators]
35
Assistance and consultancy services in the field of business
management of companies in the energy sector
36
Financial consultancy in the energy sector; consultancy
concerning financing of energy projects
37
Drilling of oil, gas, coal, water or other natural sources
for production of power and energy products; installation of
machinery for generating electricity; erecting manufacturing
plants; building constructions of plants; building
construction; advisory services regarding building
constructions; installation of industrial plant; maintenance
services for industrial plants; construction information;
rental of construction, plant and building equipment;
building repair; repair or maintenance of power generators;
building maintenance and repair; repair services for
electric generators and wind turbines
39
Distribution of energy; electricity distribution; storage of
electricity; electricity supply and distribution;
distribution and transmission of electricity
40
Generation of power; energy production; leasing of energy
generating equipment; processing and refining of oil, gas
and natural sources and fuels for production of energy,
electricity, cold, heat, air and water; electricity
generating; generation of gas and electricity
42
Research in the field of energy; consultancy in the field of
energy-saving; advisory services relating to the use of
energy; advisory services relating to energy efficiency;
developing of integrated energy concepts; professional
consultancy relating to saving energy; certification
services for the energy efficiency of buildings;
technological consulting services in the field of
alternative energy sources; professional consultancy
relating to energy efficiency in buildings; recording data
relating to energy consumption in buildings; construction
drafting; engineering services for the design of
constructions; technical consultancy services relating to
construction engineering; engineering services for the
analysis of constructions
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