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Wyoming wind farm making same power with 80% fewer turbines
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Wyoming wind farm making same power with 80% fewer turbines

Wyoming wind farm making same power with 80% fewer turbines
Photo Credit: AP Photo/Matt Young
FILE - This May 6, 2013 file photo shows a wind turbine farm owned by PacifiCorp near Glenrock, Wyo. Bigger, more efficient equipment will allow a western U.S. electric utility to redevelop an aging Wyoming wind farm with far fewer turbines while generating the same amount of power. Portland, Oregon-based PacifiCorp plans to replace 68 wind turbines at the Foote Creek I wind farm with 13 turbines over the next year. (AP Photo/Matt Young)

Wyoming wind farm making same power with 80% fewer turbines

Bigger, more efficient equipment will allow an electric utility to redevelop Wyoming's first commercial wind farm so it produces the same amount of power with far fewer turbines, an example of the growing feasibility of renewable energy in the top U.S. coal-mining state.

Portland, Oregon-based PacifiCorp plans to replace 68 wind turbines at the Foote Creek I wind farm with 13 turbines. The wind farm atop the barren and blustery ridge called Foote Creek Rim west of Cheyenne will continue to generate about 41 megawatts, or enough electricity to power nearly 20,000 homes.

Solar power often gets attention for efficiency gains but many U.S. utilities also are working to squeeze more megawatts out of wind, PacifiCorp spokesman Spencer Hall said.

"Just imagine buying a new cellphone today versus in '98," Hall said, referring to when the wind farm's first turbines were installed. "It's becoming a thing where we can't even get labor on some of them, there are so many projects going on."

PacifiCorp has 1.9 million customers in Wyoming, Utah, Idaho, Washington state, Oregon and California and wants to get more electricity from wind power in the years ahead, while reducing what it generates from coal.

Environmental groups are waiting for an October announcement by PacifiCorp outlining its future plans for coal-fired power. PacifiCorp has been weighing whether to shut down as many as nine coal-fired generating units at power plants in Colorado and Wyoming over the next several years.

"All indications are showing it will include some early retirements on at least some of the units," said Hall.

Increasingly efficient renewables and inexpensive gas-fired electricity are bad news for Wyoming's coal mining industry, which employs about 4,700 miners and supplies over 40 percent of U.S. coal. Several bankruptcies, including one that shut down two of the top-producing U.S. coal mines in the state's northeastern Powder River Basin area of rolling grasslands, have hit the industry in recent years.

At Foote Creek Rim, PacifiCorp plans to replace its 600-kilowatt Mitsubishi wind turbines with 2- and 4-megawatt Vestas turbines. The Vestas turbines will have larger blades spanning 120 yards (110 meters) and 149 yards (136 meters).

As the new turbines go up, the existing ones will be decommissioned next April.

The redevelopment includes PacifiCorp's buyout of another utility's 21 percent ownership stake in Foote Creek I. The Eugene Water & Electric Board will get $1.7 million for its share.

Other major wind projects in the works in Wyoming include Power Company of Wyoming's plans for a 3,000-megawatt wind farm about 50 miles (80 kilometers) southwest of Foote Creek Rim.

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Follow Mead Gruver at https://twitter.com/meadgruver

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