Invenergy, a Chicago-based wind energy company, has pushed the target date for a 37.5 to 45 MW wind farm to 2015. According to The Roanoke Times, Invenergy originally planned to complete the wind farm by the end of this year, but has been forced to delay its plans amidst regulatory uncertainty.

"Due to the uncertainty associated with the federal production tax credit renewal, the lack of a mandatory renewable energy standard, and public policies regulating wind energy in Virginia, Invenergy now is targeting a commercial operation date for the project sometime in 2015," Nazre Adum, the company's director of business development, said in a written statement.

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