Import-export agencies in the field of energy; Wholesaling and retailing, including online, of gas, in particular biogas, namely, wholesale and retail store services in the field of biogas and gas; Wholesaling and retailing, including online, for accumulators, namely, wholesale and retail store services in the field of accumulators; Concluding of contracts, including online, in connection with the generation of electricity and electricity supply, namely, negotiating contracts for others; Marketing consulting and business management as it relates to the fields of trading electricity, gas, and biogas and energy connection management, load course optimization, portfolio management, demand pooling and price negotiations; Business management consultancy in relation to the commercial supply of gas and electricity; Arranging of energy contracts, in particular power purchase agreements, for others, namely, negotiating contracts for others; Arranging contracts with electricity suppliers, for others, namely, negotiating contracts for others; Concluding gas connection contracts, namely, negotiating contracts for others; Advertising and market research for renewable energy concepts and new technologies in the environmental and energy sectors; business management and professional business consultancy in the context of franchising, business administration, professional business and organizational consultancy regarding the management, controlling and monitoring of companies; Professional business planning and consultancy in the field of energy and heat supply; Business consultancy, in particular professional business management, for others, in the field of energy supply; business consultancy in the planning and management of companies in the field of production of renewable energy

Building construction; Installation, maintenance, and repair of heat generating, heat conducting and heat distribution systems and cogeneration power plants and combined heat and power plants; Pipeline laying; Carrying out works regarding electrical technology, heating construction technology, air conditioning technology and ventilation construction technology, namely, installation and maintenance of heating and air conditioning units; Installation, repair, maintenance and inspection during the course of construction of power plants, solar energy systems and alternative energy products for residential and commercial use, systems and machines in the field of renewable energy, solar collectors for generating electricity in the nature of photovoltaic installations and parts therefor; Construction of facilities for generating electrical and thermal energy from renewable energy sources, including wind energy, hydropower, solar energy, geothermal heat and biomass; Installation and maintenance of solar energy systems and alternative energy products for residential and commercial use; Installation of facilities for generating biogas from biomass and recyclable materials; Providing information about the construction of wind power facilities and facilities and systems for generating renewable energy, including those powered using biomass, biogas, including being obtained from organic waste, geothermal heat, solar-thermal facilities, solar collectors for generating electricity in the nature of photovoltaic installations and hydropower facilities; Building construction supervision in connection with wind power facilities and in connection with facilities and systems for generating renewable energy, including those powered using biomass, biogas including being obtained from organic waste, geothermal heat, solar-thermal installations, solar collectors for generating electricity in the nature of photovoltaic installations and hydropower installations

Technological services and technical consultancy, namely, research and development, of renewable energies; Technical consultancy in the field of production of renewable energy offered to franchises; Consultancy relating to environmentally friendly energy in the nature of technical consultancy in the field of environmental science; Consultancy relating to energy saving, engineering, in particular relating to energy saving, measuring and control engineering and heating technology, namely, technical consultancy in the field of environmental science; Technical planning of energy supply concepts, for others, namely, designing of stations for networking and converting renewable energy; Design of renewable energy transmission lines; Technical information for operators of renewable power installations in the field of environmental engineering; Technical planning and consultancy, namely, designing equipment in the field of energy and heat supply; Technical development of equipment in the nature of designing equipment used in the renewable energy field; Construction drafting; Technical monitoring of heat generating, heat conducting and heat distribution systems and cogeneration power plants and combined heat and power plants for quality control purposes; Engineering services, namely, conducting scientific feasibility studies of technical projects in the fields of energy technology, renewable energies, in particular solar, water and wind energy, biomass, biogas, including being obtained from organic waste, geothermal heat, solar collectors for generating electricity from photovoltaic installations and solar-thermal installations; Technical consultancy in connection with the design, technical operation, and quality control monitoring of facilities and systems for generating renewable energies, including those from solar, water and wind energy, biomass, biogas, including being obtained from organic waste, geothermal heat, solar collectors for generating electricity from photovoltaic installations and solar-thermal installations; Design and development of computer software for use in connection with the monitoring of installations for generating renewable energies, including those from solar, water and wind energy, biomass, biogas, including being obtained from organic waste, geothermal heat, solar collectors for generating electricity from photovoltaic installations and solar-thermal installations