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Wind Energy


MidAmerican Energy is a recognized leader in the use and development of renewable energy; no other U.S. rate-regulated utility owns more wind-powered generation capacity.

We're Making History

In August 2016, The Iowa Utilities Board approved our request to invest $3.6 billion to install additional wind turbines in Iowa by year-end 2019. The project – Wind XI – is the largest economic development project in Iowa's history. When the 2,000-megawatt Wind XI project is completed, our annual renewable energy generation is expected to reach a level that’s equivalent to 89% of our Iowa retail customers' annual use.

Wind XI will generate an average of approximately $12.5 million per year in property tax payments, $18 million per year in landowner payments, and $48 million per year in state and local expenditures associated with the project.

Current Projects

Construction on the Beaver Creek wind project in Boone and Greene counties and the Prairie wind project in Mahaska County began in April and May 2017, respectively, and are expected to be complete by year-end. The wind farms are part of MidAmerican Energy’s Wind XI project and will add 338 megawatts of new wind generation capacity in Iowa. The Beaver Creek wind project will consist of 85 turbines, which will add 170 megawatts of wind generation capacity and the Prairie wind project will have 84 turbines and add 168 megawatts of wind generation capacity.

Construction activity at the 340-megawatt North English wind farm, which also is part of the Wind XI project, began in October 2017 and is expected to be complete in December 2018. The North English wind farm is located in Poweshiek County and consists of 170 turbines.

Previous Projects

The Ida Grove and O’Brien wind farms were placed in-service in 2016, with generation capacity of up to 301 megawatts and 250 megawatts, respectively.

Between 2004 and 2010, we placed nearly 1,285 megawatts of wind-powered generation into service in the Iowa counties of Adair, Buena Vista, Calhoun, Carroll, Cass, Crawford, Floyd, Hamilton, Polk, Pocahontas, Pottawattamie, Sac and Wright.

In 2011 and 2012, we expanded our wind farms in Adair, Cass, Pocahontas and Calhoun counties and added two new projects – one in Adams County and one in Marshall County. Together, the wind farms consist of 258 wind turbines and produce approximately 1,000 megawatts of wind-powered generation.

With completion of the Highland wind farm in O'Brien County in early December 2015 and the Adams wind farm in Adams County in late January 2016, we added more than 1,200 megawatts of wind generation capacity in six Iowa counties – Adams, Grundy, Madison, Marshall, O’Brien and Webster.

Wind Energy Resources

  • Learn where MidAmerican Energy’s Iowa wind farms are located.
  • To request access to our elementary, middle and high school wind energy videos, complete our video request form.
  • To have property you own considered by MidAmerican Energy as a potential wind farm site, complete and submit our prospective landowners form.

From the Ground Up

Watch the following video to see how we're building our energy future, one turbine at a time.

Reaching New Heights

The following video uses a combination of time-lapse footage, aerial photography and behind-the-scenes action shots to document the steps involved in building MidAmerican Energy’s first concrete wind turbine tower, located at the company’s Adams wind farm in Adams County, Iowa. At 379 feet from ground to hub, the concrete turbine is more than 100 feet taller than its neighboring turbines constructed with steel towers.