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