Solar heat has been harnessed as an energy source for a long time. The first\r\nconcentrating solar systems, using dishes, were built as early as 1878, in France.\r\nConcentrating solar rays is necessary in order to raise temperature.\r\nHigher temperatures increase the efficiency of the conversion of heat into\r\nmechanical motion and then electricity.\r\nAlthough the source of the heat is different, CSP uses the same conversion\r\nprocesses as conventional fossil-fuel power plants – the conversion of\r\nthermal energy into mechanical energy (turbine), and of mechanical energy into\r\nelectrical energy (generator).\r\n\r\nslb.com\r\n\r\n