sunset photo over wind farm

Alliant Energy tops 50% renewable energy provided for its Iowa customers

Wind portfolio increases production 25% over 2021 levels

CEDAR RAPIDS, Iowa (August 30, 2023) – More than 50% of the energy Alliant Energy’s Iowa utility provided to its customers in 2022 came from renewable energy generation. 

Alliant Energy, the third-largest owner-operator of regulated wind in the U.S., increased production by 25% from 2021 levels. This increase allowed its Iowa utility to provide a double-digit surge of renewable energy to its customers in 2022, boosting the percentage of renewable energy served to its retail electric customers to 52.7%. 

“We are proud of our progress in delivering low-cost, clean energy to our customers while keeping customer affordability top of mind,” said Mayuri Farlinger, vice president of customer and community engagement, Alliant Energy. “Our extensive wind fleet and renewable energy portfolio allows us to continue delivering on our purpose to serve our customers using reliable, clean energy sources.” 

Alliant Energy received verification of the data in a filing with the Iowa Utilities Board (IUB) in July 2023. The filing confirms the renewable energy credits (RECs) retired on behalf of its retail electric customers and the utility’s total retail sales for the calendar year. 

Alliant Energy’s Iowa renewable energy percentage increased 10% last year also in part because of an agreement to purchase clean energy from the Sac County Wind Farm in late 2021. 

Alliant Energy is committed to delivering cost-effective, reliable energy. The company is advancing its Clean Energy Blueprint, a roadmap to accelerate the transition to renewable energy. In addition to more than 1,300 MW of wind generation currently operational in Iowa, Alliant Energy plans to place 400 MW of solar into service in Iowa in the near future. 

This plan will continue to drive Alliant Energy toward its recently expanded goals for reducing all EPA reported greenhouse gases, including methane emissions from its natural gas distribution operations. 

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Alliant Energy Corporation (NASDAQ: LNT) provides regulated energy service to 1 million electric and 425,000 natural gas customers across Iowa and Wisconsin. Alliant Energy's mission is to deliver energy solutions and exceptional service customers and communities count on – safely, efficiently and responsibly. Interstate Power and Light Company (IPL) and Wisconsin Power and Light Company (WPL) are Alliant Energy's two public energy companies. Alliant Energy is a component of Bloomberg’s Gender-Equality Index and the S&P 500. For more information, visit and follow Alliant Energy on LinkedIn, FacebookInstagram and X.

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