 Each of the mirrors has a surface measuring that concentrates the sun's rays to the top of a 115-meter (377 ft) high, 40-story tower where a solar receiver and a steam turbine are located.The turbine drives a generator, producing electricity.The PS10 is located 20 km west of Seville (which receives at least nine hours of sunshine 320 days per year, with 15 hours per day in mid summer).