Office functions, accounting, drawing up of statements of accounts, including heating accounts, business administration services, namely assisting others with the management and drawing up of statements of accounts, including heating accounts; business administration services, namely elaboration, establishment and maintenance for others of the statutory control system for heating installations; business administration services allowing the drawing up of heating accounts for properties via the Internet; e-service in the form of providing consumption accounts and distribution lists via the Internet; business adminstration services, namely provision of information on meter accounts; meter reading, including remote meter reading, to enable the drawing up of statements of accounts, as well as information concerning the aforementioned.

Building construction, repair, installation services; setting up, repair and maintenance of meters; information about setting up, repair and maintenance of meters.

Meter testing, including meter testing at laboratories, calibration and adjustment (measurement), information about legislation relating to heating accounts, information about meter testing.

Apparatus for heating, steam generating, drying, ventilating, water supply and sanitary purposes; Fittings for sanitary installations.

Advertising; Business management; Business administration; Office functions; Wholesale services and retail services in relation to fuels, in particular gases, and in relation to electricity and heat energy; Professional business and organisational consultancy in the field of energy and water supplying and energy and water saving; Professional business monitoring of gas, electricity and heat provider invoices and contracts, Cost price analysis; Arranging of energy supply contracts, in particular arranging of contracts, for others, with gas, electricity and heat providers; Accounting, including the determination of the energy and water consumption and the costs related thereto, for others, including reading meters for determining, allocating and settling consumption costs for energy, heat, water, hot water, heating, electricity, additional rental costs and other operating costs in relation to building management; Business consultancy, including business organisation and management consultancy in the field of energy and water supply; Business management, for others, in the field of energy and water supplying, including the drafting of consumption invoices; assembling data in computer-databases; Computerized file management; Marketing services; Public relations in the field of energy and water supplying; Arranging of trading and economical contacts, also over the Internet.

Financial affairs in connection with the rental, leasing and financing of systems for recording consumption costs, including the measuring apparatus necessary therefor; Collection of outstanding debts (debt collection) in connection with the invoicing of energy consumption costs and additional rental costs and other operating costs.

Installation, assembly, repair, maintenance and servicing of power station, heating, sanitary, air conditioning and ventilating installations and other heating technology installations; Installation, assembly, repair, maintenance and servicing of measuring apparatus and measuring aids for determining and allocating energy consumption costs, heat consumption costs, water consumption costs, hot water consumption costs, gas consumption costs, heating costs, electricity consumption costs, additional rental costs and other operating costs and other building technology installations.

Telecommunications; Providing and operation of wireless telecommunications networks, in particular radio networks, in particular low-power networks (LPWANs) and of wired telecommunications networks, in particular for transmitting energy, gas, water and heat consumption data; Providing and operation of wireless telecommunications networks, in particular radio networks, in particular low-power networks (LPWANs), and of wired telecommunications networks, in particular for transmitting and monitoring technical status parameters for gas technology, water technology, power technology and heat technology installations and devices or other consumption or status data; Rental of local telecommunications networks; Providing and operation of an access point (gateway) to an existing telecommunications network; Providing online access to a database, in particular for inputting and taking note of energy, gas, water and heat consumption data, and for taking note of and monitoring technical status parameters of gas, water, electricity and heat technology installations and devices or for taking note of and monitoring other consumption or status data.

Services provided by an energy supply company, namely supplying consumers by means of delivering electricity, heat energy or gas, conducting and transport of electricity, heat energy or gas; Rental of supply transport networks for conducting electricity, gas and heat energy.

Generation of electricity, gas, by conversion, and heat energy.

Providing of training and conducting courses in the field of rational energy use, in particular with regard to building management, the determining and apportioning and billing of energy consumption costs, heat consumpton costs, water consumption costs, hot water consumption costs, heating costs, power consumption costs, ancillary leasing costs and other operating costs, in the field of debt collection services, and apparatus assembly and maintenance.

Scientific and technological services and research and design relating thereto; Industrial analysis and research services; Design and development of computer hardware and software; Technical consultancy for businesses in the field of energy and water supplying; Technical planning and consultancy and surveying in the field of energy consumption technology, heat, water and home technology, and in the field of energy, heat and water saving; Rental of heat quantity measuring apparatus, heat meters, water meters, heating cost and hot water cost distributors; Development and creation of computer programs for use in the field of determining and billing energy consumption costs, and determining and billing additional property costs and other operating costs, engineering surveying in this field; Issuing of energy certificates (certification); Technical monitoring of power plant installations, heating installations, sanitation facilities, air-conditioning installations and other heating technology installations; Technical monitoring of measuring apparatus and measuring aids for determining and allocating energy consumption costs, heat consumption costs, water consumption costs, hot water consumption costs, gas consumption costs, heating costs, power consumption costs, ancillary rental costs and other operating costs and other building technology installations; Evaluation of measurement values for measuring apparatus and measuring aids for determining and allocating energy consumption costs, heat consumption costs, water consumption costs, hot water consumption costs, gas consumption costs, heating costs, power consumption costs, ancillary rental costs and other operating costs and other building technology installations.