Siemens Energy has received another large onshore wind order in the U.S. Following successful completion of its 593.4-megawatt wind projects in Iowa in 2011, MidAmerican Energy Company, headquartered in Des Moines, Iowa, is again partnering with Siemens on its 407-megawatt wind project expansion in 2012.

In November 2011 at the conclusion of a competitive tender process, MidAmerican Energy and Siemens entered into a turbine supply agreement for an additional 176 wind turbines to be constructed at three sites in Iowa. Each turbine is capable of producing 2.3 megawatts of energy.

Siemens will provide wind turbines for MidAmerican Energy’s recently announced 103.5-megawatt Vienna wind project, which is expected to be located in Marshall and Tama counties; 200.1-megawatt Eclipse wind project, located in Guthrie and Audubon counties; and 101.2-megawatt Morning Light wind project, located in Adair County. The contract includes a five-year service, maintenance and warranty agreement.

Once complete, the wind turbines will supply renewable energy to more than 120,000 average U.S. households. The nacelles will be manufactured in Hutchinson.

In 2008, Siemens was awarded the contract to supply 76 of its 2.3-megawatt wind turbines for the 174.8-megawatt Adair wind project in Iowa. In late 2010, Siemens received its largest wind order ever for 258 wind turbines for MidAmerican Energy’s 593.4-megawatt Iowa wind expansion projects located in Adams, Adair, Calhoun, Cass, Marshall and Pocahontas counties in Iowa. By year-end 2012, the two companies will have provided a total of nearly 1.2 gigawatts of wind-powered energy in Iowa.