Las Vegas Sun

September 1, 2014

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Heliostats (mirrors that track the sun and reflect the sunlight onto a central receiving point) are shown during a tour of the Ivanpah Solar Electric Generating System in the Mojave Desert in California near Primm, Nev. Feb. 13, 2014. The project, a partnership of NRG, BrightSource, Google and Bechtel, is the world's largest solar thermal facility and uses 347,000 sun-facing mirrors to produce 392 megawatts of electricity, enough energy to power more than 140,000 homes.

Steve Marcus

Heliostats (mirrors that track the sun and reflect the sunlight onto a central receiving point) are shown during a tour of the Ivanpah Solar Electric Generating System in the Mojave Desert in California near Primm, Nev. Feb. 13, 2014. The project, a partnership of NRG, BrightSource, Google and Bechtel, is the world's largest solar thermal facility and uses 347,000 sun-facing mirrors to produce 392 megawatts of electricity, enough energy to power more than 140,000 homes.