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. Construction is underway on the 154-MW project, and all turbines are scheduled to be erected by the end of 2015.