35 Business management; business consultancy regarding energy, water and heating supply and waste processing;providing commercial information within the framework of energy, water and heating supply and waste processing;loyalty programmes, namely arranging and supervising promotional activities intended to promote sales.
37 Construction and repair; installation services; plumbing services;installation, maintenance and repair of electric installations, gas, (hot) water and heating installations, equipment and apparatus, telecommunications devices and apparatus, lighting installations and heat technology installations;installation, maintenance and repair of cable networks;installation, maintenance and repair of distribution stations for the supply of energy and of heating and water supply installations;installation, maintenance and repair of installations and machines for alternative energy production;laying of cables and pipelines.
39 Transport and storage; energy companies, namely transport and distribution of electricity, gas, heat and water;supplying of electricity;transport of gases, liquids and solids through pipelines;transport and storage of waste.
40 Generation, production and conversion of energy and electricity;waste disposal, including the recycling and processing of waste and landfill gas;waste treatment;recycling of refrigerating apparatus;processing of manures;incineration and destruction of waste;water purification.
42 Technical consultancy on energy management, energy supply, the use of energy, heat and water supply;research and studies into energy-saving generating techniques, recycling and processing of waste materials, waste gas and manures;technical consultancy on establishing and managing networks;providing technical information;sorting waste and recyclable raw materials;waste processing consultancy;consultation in environmental protection;rental of gas, water and heating installations, equipment and apparatus; quality control; testing of among other things electrical installations, gas and water supply installations, equipment and apparatus, heating installations, equipment and apparatus ;information and providing information to consumers on electricity consumption and power cuts, including within the framework of preventing power cuts and analysing electricity consumption, supplying electricity and forecasting electricity consumption;consultancy on the efficient use of energy, electricity, heat and water supplies;loss adjustment.