4
Electrical energy
7
Machines; Mechanical equipment, apparatus and motors and engines, and installations constructed therefrom, for supply, disposal, process and environmental engineering, machines for energy supply, incineration, gasification, conversion into electricity, recycling, electricity, emergency power and alternating current generation; Heat-exchangers
9
Consumption meters for metering, registering, displaying and transmitting consumption of energy, heat, cooling energy, water, gas and electricity; Measuring devices for energy monitoring and energy analysis
11
Equipment and apparatus for sanitary and heating technology and for generation of thermal energy and conversion of thermal energy, distribution equipment for heat, warm water and cold water
35
Business administration and operational management; Office functions for recording, processing, and billing of energy, heat, cold, water, gas and electricity data and consumption, and of additional charges for the purpose of billing and creation of overviews; Business management; Administration (business administration); Office functions; Professional business energy consultancy and development of professional business energy concepts for private and industrial use; Arranging contracts with electricity and energy suppliers; Negotiating contracts for providing energy services, in particular in the fields of contracting and submetering; Energy efficiency consultancy from a professional business perspective and consultancy relating to personnel management in this field; Professional business analysis of energy use; Operational management of power stations, Operational management of waste treatment plants
36
Real estate affairs; Real estate management, and brokerage, rental and leasing of real estate and energy installations
37
Maintenance and servicing of technical facilities and energy installations; Building construction; Construction of power plants, gas, water, sewage and energy installations; Building supervision; Construction work and repair, Namely reassembly and exchange and maintenance and repair of measuring, recording and monitoring apparatus, Installation services; Servicing and maintenance of energy installations and networks
38
Telecommunications
39
Supplying of energy; Transport and distribution of energy, gas, water and heating and sewage
40
Production of energy, Waste water removal; Remediation of polluted sites; Waste processing services; Destruction of waste; Incineration and Recycling of trash and Waste; Generating electricity, steam and heat; Treatment of sewage by mechanical or chemical cleaning, Sewerage treatment services; Disposal of rubbish and waste through processing, destruction and incineration
42
Engineering services; Development of energy concepts with regard to technical matters; Development of software for the energy sector; Energy consultancy with regard to technical matters; Energy efficiency consultancy from a technical perspective; Technical consultancy and surveying and technical planning and technical calculations for energy efficiency and energy consumption optimisation; Technical analysis of energy use; Technical consultancy and engineering in all infrastructure sectors (energy, water, sewage, disposal, environment, traffic and telecommunications)