More wind energy for Iowa 

We are building up to 1,000 megawatts of additional wind generation in Iowa from 2018 through 2020. This can generate enough energy for 430,000 homes. Overall, this represents an investment of approximately $1.8 billion. Once complete, Alliant Energy’s Iowa energy company will own and operate 1,299 megawatts of wind generation in Iowa.

What benefits will Iowa see as a result of these projects?  

  • These will provide enough renewable energy to power 430,000 homes per year.
  • Hundreds of jobs for Iowa during construction.
  • Tens of millions in local property taxes throughout the life of the wind farms.
  • Millions of dollars in lease payments to landowners.
  • This and other wind projects will contribute to our target to reduce carbon dioxide emissions 40% from 2005 levels by the year 2030 across our entire service area. Learn more in our Responsibility Report.

What is the timeline? 

A total of five wind farms will be built, with the last projects finishing by the end of 2020.

Why are you adding more wind energy now?

  • Wind has no associated fuel expenses, which helps provide cost stability to customers.
  • New technologies are reducing the cost of wind and increasing performance.
  • The cost of installed turbines has dropped 49% since a peak in 2009
  • Maintenance costs have dropped 52%
  • Taller towers and longer blades allow more energy production in lower wind speeds
  • Each wind turbine can produce four times more energy than turbines installed just 10 years ago

Source: U.S. Department of Energy, 1999 to 2016 comparisons

  • Tax incentives are only available for a limited period. If we don’t move forward today, we will miss an opportunity to provide our customers with the net benefits that result from investing in wind.  
Click the image below to launch a 360-degree video tour of Whispering Willow Wind Farm.
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