Abengoa SA (Seville, Spain), in consortium with the company SEPCOIII, has started commercial operation of phase two of the Taweelah desalination plant (Abu Dhabi), following the successful completion of the contractual tests. This is the largest reverse osmosis desalination plant in the world (909,218 m3/day) and the first to combine the production of drinking water with the generation of clean energy. The project is located at the Taweelah power and water generation complex, 45 km north of Abu Dhabi (United Arab Emirates).