Photograph by Ken James/Bloomberg

Project engineer Stephen Eley surveys the exhaust duct of the gas turbine at unit one of the Pacific Gas and Electric Colusa Generating Station in Maxwell, Calif.

Alternative Energy

Natural Gas Is Cheap; Green Power Isn't

Generating electricity for a home with power created from waves would cost $500 per megawatt hour. Natural gas and coal are relative bargains.

Applegate is a graphics editor for Bloomberg Businessweek. Follow him on Twitter @evanapplegate.

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