Lockheed-Martin is planning on building an 8.5GW concentrating solar power plant in Arizona by 2014. The plant will rely on parabolic troughs collecting solar heat energy, which is used to create steam and turn generators. The plant will also include about 6 hours of thermal storage in the form of molten salts that can store heat energy at off peak times to increase peak production, even when the sun isn't brightly shining.