Jürgen Parisi

IFE Eriksen AG operates as a investment company with interests in renewable energy and construction. Its projects include wind farm golzwarden, trinwillershagen, bullenbruch and gustow. The firm offers new business models, integrated manufacturing facilities, monocrystalline and polycrystalline module production, repowering of wind farms, project planning of wind and solar power plants, commercial management of wind farms, and technical operation of wind farms. The company was founded by Marius Eriksen in 1979 and is headquartered in Oldenburg, Germany.

The Institut für Solarenergieforschung GmbH is a research institute located in Emmerthal, Germany. The German company promotes the use of solar energy through applied research and the training of young people in the areas of "photovoltaics" and "solar systems". The company cooperates with industry, other research institutions, and universities and are an institute of the Leibniz University of Hanover. The company ultimately controlled by the State of Lower Saxony. The CEO of the company is Rolf Brendel.