04
Electrical energy; electrical energy from solar power;
electrical energy from wind power; electrical energy from
renewable sources; electricity; biofuels
37
Installation of solar systems; drilling for oil, gas, coal,
water or other natural resources for the production of power
and energy products; installation of machines for generating
electricity; installation of generators for generating
electricity; construction of manufacturing plants;
construction of plants; building construction; building
construction consultancy; installation of industrial plants;
maintenance of industrial plants; construction information;
rental of construction and building equipment; repair and
maintenance of buildings; repair and maintenance of
electricity generators; maintenance and repair of buildings;
repair of electricity generators and wind turbines
39
Distribution of energy; supply of electricity; storage of
electricity; supply and distribution of electricity;
distribution and transmission of electricity
40
Energy production; electricity production from solar energy;
energy production; leasing of equipment for energy
production; processing and refining of oil, gas and natural
resources and fuels for the production of energy,
electricity, refrigeration, heat, air and water; electricity
production; gas and electricity production
42
Research in the field of energy; consultancy in the field of
energy-saving; energy use consultancy; energy efficiency
consultancy; development of integrated energy concepts;
professional consultancy relating to energy-saving;
certification of the energy efficiency of buildings;
technological consultancy in the field of alternative energy
generation; professional consultancy relating to energy
efficiency in buildings; recording data relating to energy
consumption in buildings; construction drafting; engineering
relating to the design of buildings; technical consultancy
relating to structural engineering; engineering relating to
the analysis of buildings
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