Adrianus van Wijk

Silicium de Provence SAS produces and supplies silicon to the solar cells manufacturing industry. The company was founded on June 30, 2006 and is headquartered in Saint Auban, France.

SOL Holding AG operates as a holding company with interest in manufacturing silicon-based solar cells. It manufactures photovoltaic modules and industrially produced solar power stations. The company was founded in 2007 and is headquartered in Berlin, Germany.

Econcern NV operates as a holding company with interest in energy generation services. Its subsidiaries include Ecofys, Evelop, Ecostream, and Ecoventures. The firm has offices in Belgium, Brazil, Bulgaria, Canada Curaçao, France, Germany, Italy, Poland, and Spain. The company was founded in 1984 and is headquartered in Utrecht, the Netherlands

Ecoventures BV was a venture capital investment firm located in Utrecht, and a subsidiary of the Econcern holding firm which was founded in 2000 and traces their origins to 1984 when Ecofys was created. The group has offices worldwide in 20 countries. They concentrate on development in all areas of sustainable and renewable energy and energy efficiency. Ecoventures BV filed for bankruptcy in 2009. The firm focused on projects contributing to sustainable energy supply, developed within or outside of the Econcern group. Their investment themes included integrating renewable energy production in new products, energy producing buildings, distributed power generation and hybrid grids, sustainable offshore energy production and bio-fuel energy production.