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Energy efficiency

The IUB is responsible for energy efficiency programs and energy efficiency plans of Iowa investor-owned utilities. Energy efficiency plans in Iowa address both electric and natural gas usage through a variety of programs that attempt to give all customers opportunities to participate.

To review the law that established Iowa Energy Efficiency, see Iowa Code chapter 476.6(13) and (15).  Additionally, changes enacted during the 2019 Legislative session can be found in Senate File (SF) 638.

Rules that apply to Energy Efficiency can be found in the Utilities Division section of the Iowa Administrative Code 199 chapter 35.

For more information, contact Don Tormey at 515-725-7347 or

See other energy efficiency information.

Energy Efficiency Dockets in EFS

The most recently approved Energy Efficiency Plans, and new plans to be reviewed for 2024-2028, may be found by searching EFS at the docket links shown in the table.

Earlier documents are available in EFS; however, filings prior to 2009 are unavailable electronically and may be requested through IUB Customer Service. Call 515-725-7337 or email

Energy Efficiency Dockets in EFS
Company Name Docket Number
2024–2028 Plans In process
2019–2023 Approved Plans  
MidAmerican Energy Company EEP-2018-0002
Interstate Power & Light Company, an Alliant Energy Company EEP-2018-0003
Black Hills/Iowa Gas Utility Company, LLC d/b/a Black Hills Energy EEP-2018-0004
Liberty Energy (Midstates) Corporation EEP-2018-0005


Energy Efficiency Programs Accordion