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.
Alliant Energy (Interstate Power and Light) electric and gas rate increase
Approved Base rate case, docket RPU-2023-0002 before the Iowa Utilities Commission.
No residential dollar figure published yet
The filing does not state a typical-bill impact we can verify. We will add one when the commission staff or the consumer advocate publishes it.
Alliant Energy's Iowa utility, Interstate Power and Light, asked in 2023 to raise electric and natural gas rates by about 284 million dollars a year. The Iowa Utilities Commission approved a settlement in September 2024 that cut the increase to about 185 million dollars and raised the fixed monthly charge on a typical residential electric bill from 13 dollars to 15.50 dollars, effective October 1, 2024. The order also freezes Alliant's electric rate base through October 2029 under normal conditions.
What it means for your bill: 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.
- Status
- Approved
- Utility
- Alliant Energy Iowa
- Commission
- Iowa Utilities Commission
- Docket
- RPU-2023-0002
- Decided
- September 17, 2024
- On bills from
- October 1, 2024
- Last checked
- August 29, 2026
Sources
- IUC issues decision in Alliant Energy's request to increase electric and natural gas rates, Iowa Utilities Commission, 2024-09-17
- Iowa regulators approve Alliant Energy rate increase, The Gazette
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Other Alliant Energy Iowa matters
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.