Although panel prices have fallen by two thirds since 2008, the Department of Energy estimates that solar power still costs at least three times more than natural gas.
“There is a large price difference with gas,” Robert Powers, president of American Electric Power (AEP) Utilities, told the Solar Power International conference in Dallas, Texas.
AEP operates in ten Midwestern states and Texas. It says five shale-gas formations lie beneath its service area.
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