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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 a joint news conference with Iowa Gov. Terry Branstad on April 14, 2016, we outlined a plan 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.

In 2015, the energy that we generated from wind equaled 47% of the energy sold to our retail customers in Iowa. That figure is expected to increase to 58% in 2017 with existing projects. 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 approximately 85% of our Iowa retail customers' annual use.

The Iowa Utilities Board approved our request August 26, 2016, and we are working to finalize the project locations.

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 continues on the Ida Grove and O’Brien wind farms, which will add up to 552 megawatts of wind generation capacity to the existing fleet. The project is on schedule to be complete by year-end 2016. Plans call for approximately 134 turbines and up to 301 megawatts of generation capacity at the Ida Grove wind farm, and approximately 104 turbines and 250 megawatts of generation capacity at the new O’Brien wind farm.

Previous Projects

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.