The 392-megawatt concentrating solar power (CSP) plant built by Israel’s BrightSource Energy is now delivering renewable energy to the California grid. The five-square-mile Ivanpah Solar Energy Generating System in the Mojave Desert is the largest plant of its kind in the world.
http://www.greenprophet.com/2014/02/brightsources-ivanpah-the-worlds-largest-solar-thermal-project-is-live/