Business consultancy, including professional business consultancy, in the field of environmental technology, energy marketing, in particular marketing of electricity from renewable energy sources; development, implementation and marketing of environmental marketing strategies for others; marketing of energy saving concepts and products, for others; marketing of projects in the field of renewable energy, for others; professional business planning and consultancy in the field of energy generating installations, in particular photovoltaic and solar installations, hydroelectric power stations, wind energy installations, wind farms, biomass power plants and geothermal power stations; wholesale and retail services in relation to components, equipment and systems for energy generating installations, in particular photovoltaic and solar installations, hydroelectric power stations, wind energy installations, wind farms, biomass power plants and geothermal power stations

Assembly and installation of energy generating installations, in particular photovoltaic and solar installations, hydroelectric power stations, wind energy installations, wind farms, biomass power plants and geothermal power station; maintenance and repair of energy generating installations, in particular photovoltaic and solar installations, hydroelectric power stations, wind energy installations, wind farms, biomass power plants and geothermal power station; building construction, in particular services in the field of the construction of energy generating installations, in particular photovoltaic and solar installations, hydroelectric power stations, wind energy installations, wind farms, biomass power plants and geothermal power station

Technical design of energy generating installations, in particular photovoltaic and solar installations, hydroelectric power stations, wind energy installations, wind farms, biomass power plants and geothermal power station; technical consultancy with regard to the use of photovoltaic and solar installations and of power stations; development of solar cells and solar modules, and of energy generating installations, in particular photovoltaic and solar installations, hydroelectric power stations, wind energy installations, wind farms, biomass power plants and geothermal power station; development of assembly and rack systems for photovoltaic and solar installations; technical expertise and consultancy; geological calculations for the extraction of natural resources for the production of energy and energy products; technical reports and projects and product development within the power and energy sectors; research and measures for improving the environment within the power and energy sectors; development of technical material and industrial installations, in particular in the energy sector; development of energy saving concepts and products, for others; development of projects in the field of renewable energy, for others