With the completion of Wyoming's Top of the World wind farm, Duke Energy (DUK), Charlotte, N.C., now has 935 MW of wind power in commercial operation. This figure will rise to nearly 1,000 MW later this year when the 51-MW Kit Carson Windpower Project in eastern Colorado comes on line. In total, Duke Energy has committed more than $1 billion since 2007 to build its wind power business.

The 200-megawatt (MW) wind farm, located in Converse County, Wyo., supplies wind energy to PacifiCorp under the terms of a 20-year power purchase agreement. The 110 wind turbines that comprise the Top of the World project are capable of producing enough electricity to power approximately 60,000 homes. Details