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Leading the Way in Solar Power

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This is a view of the parabolic solar mirrors from above. There are 14 acres of these mirrors at the APS Saguaro Solar Power Plant. According to APS, the mirrors focus sunlight on specially coated steel tubes filled with flowing mineral oil. The oil is heated to 600 degrees Fahrenheit and used to heat a second fluid -- pentane. Pentane vapor is then forced under pressure through a tube in the turbine generator. (Bill Baker)
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