Development, manufacture, repair, maintenance, service and distribution of plants, systems and components of all kinds in the field of renewable energy generation plants, as well as trade in all relevant components. Planning, design, support, technical operation, technical customer service, sales and marketing of plants and systems for energy generation, energy saving from renewable materials at home and abroad. Construction and operation of renewable energy generation plants and brokerage as well as trade in raw materials, waste materials for the operation of the plants. Sales and trade in systems for general energy saving. Development of business management and corporate law concepts for participations in companies in the field of energy generation from renewable energy sources at home and abroad; complete purpose description according to the statutes.