MidAmerican Energy

MidAmerican Energy Company's new wind farm in Adams County, Iowa will include a first for the company - a concrete wind turbine tower. MidAmerican Energy has contracted with Siemens for the supply and construction of its new concrete tower design. The 2.3-MW concrete tower turbine at the Adams wind farm will measure 377 feet from ground to hub, compared to 263 feet for most of the turbines in use at other MidAmerican Energy wind farms. The concrete turbine is one of 64 wind turbines planned for the Adams wind farm.

MidAmerican Energy completed work on four of the five wind farms that make up its 1,050-MW Wind VIII project. The three wind farms completed in 2014 - Lundgren in Webster County, Macksburg in Madison County and Wellsburg in Grundy County - account for a total of 511.4 MW of wind generation capacity, to go along with the 44.6 MW of generation capacity at the Vienna II wind farm in Marshall County, which was completed in 2013. The final piece of the Wind VIII project - the 495-MW Highland wind farm in O'Brien County - will be finished by the end of 2015.

Google and MidAmerican Energy (MidAmerican) established an agreement for MidAmerican to supply Google's Council Bluffs, Iowa data center with up to 407 MW of wind-sourced energy. The wind power will come from several wind projects that are part of MidAmerican's Wind VIII program, an initiative under which MidAmerican will bring 1,050 MW of new Iowa wind power online by the end of 2015.

Siemens received an order from MidAmerican Energy for the supply of 448 wind turbines. With a total capacity of 1,050 MW, this represents not only the largest order for onshore wind turbines for Siemens, but also the largest single order for onshore wind power awarded globally to date. The wind turbines, each with a nominal rating of 2.3 MW and a rotor diameter of 108 meters, are to be installed in five different projects in Iowa. Siemens will also be responsible for service and maintenance of the wind turbines.

MidAmerican Energy will add up to 1,050 MW of wind generation, consisting of up to 656 new wind turbines, in Iowa by year-end 2015. If the expansion is approved by the Iowa Utilities Board, MidAmerican Energy will own and operate approximately 3,335 MW of wind generation capacity in Iowa by year-end 2015.