Torresol Energy is a joint venture between Sener Aeronáutica (60%) and Masdar Initiative (40%). It develops solar power tower plants with molten salt technology and parabolic trough power plants. Torresol Energy is planning three solar power plants in Spain with an approximate combined value of €800 million one of which will be a CSP central tower receiver system the Gemasolar 2006 project. The Gemasolar 2006 project is known under the name Solar Tres.