BrightSource Energy has just confirmed where the world's largest solar thermal plant is: California. The Ivanpah Solar Electric Generating System has just been enabled in the state.
The solar array is backed up by both Google and NRG Energy, producing a total of 392MW of power from its 173,500 multi-mirror units. Generating this much energy, the massive solar farm can power 140,000 nearby homes, and represents 30% of all the solar thermal energy in the United States. The solar farm takes up a massive 5.5 square miles of space, and is unfortunately creating trouble for nearby wildlife and birds.