Green Bonds

Green bonds are bonds whose proceeds are used for “green” or environmentally beneficial projects. Alliant Energy is using green bonds to finance affordable renewable energy projects for our customers.

Our clean energy vision

Alliant Energy is part of a worldwide movement toward cleaner energy, carbon reduction and sustainability. We are transitioning our energy to a cleaner mix and expanding renewable resources.

In 2020, we announced an aspirational goal to achieve net-zero carbon dioxide (CO2) emissions from the electricity we generate by 2050. This builds upon our Clean Energy goals to eliminate all existing coal from our energy mix by 2040 and reduce CO2 emissions by 50% and water supply needs for fossil-fuel generation by 75% by 2030 from 2005 levels.

Green bond issuances for renewable projects

In September 2018, Alliant Energy’s Iowa energy company, Interstate Power and Light Company (IPL), completed the issuance of $500 million 4.10% green bonds due 2028. We invested an amount in excess of the net proceeds from the sale of these bonds for wind and solar generation projects owned and operated by IPL.

In April 2019, Alliant Energy’s Iowa energy company, IPL, completed the issuance of $300 million 3.60% green bonds due 2029. We invested an amount in excess of the net proceeds from the sale of these bonds for wind generation projects owned and operated by IPL.

In September 2019, Alliant Energy’s Iowa energy company, IPL, completed the issuance of $300 million 3.50% green bonds due 2049. We invested an amount in excess of the net proceeds from the sale of these bonds for wind generation projects owned and operated by IPL.

In September 2021, Alliant Energy’s Wisconsin energy company, Wisconsin Power and Light Company (WPL), completed the issuance of $300 million 1.95% green bonds due 2031. We invested an amount in excess of the net proceeds from the sale of these bonds for wind and solar generation projects owned and operated by WPL.

In August 2022, Alliant Energy’s Wisconsin energy company, WPL, completed the issuance of $600 million 3.95% green bonds due 2032. We invested an amount equal to or in excess of the net proceeds from the sale of these bonds for solar generation projects owned and operated by WPL.

In March 2023, Alliant Energy’s Wisconsin energy company, WPL, completed the issuance of $300 million 4.95% green bonds due 2033. We invested an amount equal to or in excess of the net proceeds from the sale of these bonds for solar generation projects owned and operated by WPL.

To explore the projects these green bonds will finance, please visit our wind and solar pages.

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