The biggest solar thermal plant ever built is in the Mojave Desert of California and generates 80 megawatts. (The biggest single photovoltaic installation produces 12 megawatts.) Solar thermal power prices range from 11 cents to 15 cents per kilowatt-hour, making it more expensive than natural gas generation at its lowest price, around 7 cents, but less expensive during peak hours.

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This includes investing in more of the highly specialized machines that can test and simulate everything from power and performance to life and thermal behavior over a complete range of temperatures and possible operating conditions.

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The entire site would be carbon neutral and powered by a range of solar, thermal and recycling generators.

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The company has come up with a designer thermal salt that can hit temperatures in the 700 degree Celsius range, or far hotter than the 500 degree Celsius temperatures possible with ordinary salts.

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