This Feb. 11, 2014 file photo shows some of the 300,000 computer-controlled mirrors, at the Ivanpah Solar ElectirIc Generating System in Primm, Nev. The federal government expects an increase in the use of renewable energy, such as solar, in the coming year.
This Feb. 11, 2014 file photo shows some of the 300,000 computer-controlled mirrors, at the Ivanpah Solar ElectirIc Generating System in Primm, Nev. The federal government expects an increase in the use of renewable energy, such as solar, in the coming year. Chris Carlson AP
This Feb. 11, 2014 file photo shows some of the 300,000 computer-controlled mirrors, at the Ivanpah Solar ElectirIc Generating System in Primm, Nev. The federal government expects an increase in the use of renewable energy, such as solar, in the coming year. Chris Carlson AP

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