39
Transport, distribution and supply of energy, in particular Transportation, distribution and supply of electricity, gas and water; Information and consultancy relating to the transport, distribution and supply of energy; Procurement (distribution) of energy (electricity, gas, water, steam) for others; Distribution of non-promotional matter, in relation to the following fields: Energy, Energy transport, Distribution of energy, Provision of power, Environmental protection, new energy sources, preservation of natural resources and sustainable development
40
Energy production, Production of electricity and gas; Generation of electrical energy; Production of energy using renewable energy sources, in particular thermal, climatic, geothermal, wind, solar, hydraulic or biomass energy; Rental of energy generators, Professional consultancy relating to the production energy, and the generation of electricity and gas, Waste processing, Recycling of waste, Material treatment information, Air deoderising, air purifying, air cooling, waste water purification
42
Technical information and consultancy provided by engineers relating to installations for supplying and/or producing energy, in particular electricity, gas, heating and water; Technical information and consultancy relating to installations for the supply and/or generation and/or distribution of energy, in particular electricity, gas, heat, steam and water and relating to electric safety, quality control; Technical studies and analysis, diagnostics (engineering) for the setting up and installation of apparatus and installations for the supply and/or generation and/or distribution of energy, namely electricity, gas, heat and water