This is a private contract rate for a data center developer, not a residential rate, but its minimum payment terms are meant to stop those costs from being shifted onto household bills.
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Alliant Energy Iowa
Investor-owned utility (Interstate Power and Light Co), regulated by the Iowa Utilities Commission. The average Iowa home pays about $112 a month for electricity (EIA, 2024).
Alliant Energy Iowa rate increase 2026: no pending rate case right now
Recent decisions are below. See every case in Iowa, or get an alert when the next one is filed.
Decided
This is a private contract rate for a data center developer, not a residential rate, built to keep large new loads from raising costs for everyone else.
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This raised the fixed monthly customer charge on a typical Alliant residential electric bill from $13 to $15.50, on top of any usage based charges.
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How to have a say
Rate cases are decided by the Iowa Utilities Commission, which takes written comments on every docket and holds public hearings on the big ones. Comment deadlines and hearing dates are on each case page above when we have them. The office that argues for households in these cases is the Office of Consumer Advocate; its filings are the plain-English version of the utility's numbers.
Guides: how to comment and whether it helps, what "typical bill" means, how to read your bill.
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Other Iowa utilities with cases
MidAmerican Energy investor-owned utility
Corrections and tips: [email protected]. Every figure links to its source on the case page.