MidAmerican Completes 30 MW Expansion Of Iowa Wind Project

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Siemens Energy Inc., Mortenson Construction and MidAmerican Energy Co. say they have completed the expansion of MidAmerican Energy's wind project near Pomeroy, Iowa.

Thirteen Siemens wind turbines were erected at the site, creating an additional 29.9 MW of generation capacity. The 13 units are the first of 258 wind turbines Siemens is providing and Mortenson Construction is erecting at three MidAmerican Energy wind projects in Iowa this year.

In December 2010, at the conclusion of a competitive tender process, MidAmerican Energy and Siemens entered into a turbine supply agreement for 258 Siemens SWT-2.3-101 wind turbines, each with an output of 2.3 MW. The total project will add 593.4 MW to MidAmerican Energy's generation portfolio.

The Pomeroy wind expansion project is located in Pocahontas and Calhoun counties, and the remaining 245 wind turbines will be erected in Cass, Adams, Adair and Marshall counties at MidAmerican Energy's Rolling Hills and Laurel wind projects by year-end.

Siemens is supplying the turbines, as well as providing operation, maintenance and warranty service for the project. Minneapolis-based Mortenson Construction was selected through a separate competitive tender process by MidAmerican Energy to construct the wind projects and to install access roads, underground electrical collection systems and internal tower wiring.

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