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.
no figure yet
Alliant Energy individual customer rate for Vulpine Power (Google data center)
Approved Rate matter, docket TF-2025-0007 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.
What happens next
The decision is final; the new rate takes effect once the order sets a date. How rate cases work.
Fileddate not published
Hearingheld or waived
Decisiondecided
On billsdate not published
Alliant Energy's Iowa utility got Iowa Utilities Commission approval for a special long term contract rate, called an individual customer rate, for Vulpine Power, the company developing Google's data center campus at the Big Cedar Industrial Center in Cedar Rapids. These contracts generally require large customers like data centers to commit to buying a minimum amount of power for many years, even if they end up using less. Iowa regulators have said this structure is meant to keep the cost of new power lines and equipment built for data centers off the bills of everyday households.
What it means for your bill: 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.
- Status
- Approved
- Utility
- Alliant Energy Iowa
- Commission
- Iowa Utilities Commission
- Docket
- TF-2025-0007
- Data center linked
- Yes. The filing ties part of the cost or the tariff design to data center load. The projects themselves: isadatacentercoming.com.
- Last checked
- August 29, 2026
Common questions
How much will my Alliant Energy Iowa bill go up?
That has not been published yet; we will add it once the commission staff or the consumer advocate release a figure.
When would the new rates start?
Not yet set. That is decided along with the case, usually as part of the commission's final order.
When is the hearing?
No hearing date is on record for this case.
How do I comment?
The comment period closed once this case was decided; its result is above.
Sources
- Data Centers in Iowa Resource Hub, Clean Energy Districts
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Other Alliant Energy Iowa matters
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.
no figure yet
Other pending cases in Iowa
1
MidAmerican Energy natural gas rate increase
MidAmerican Energy, IA
MidAmerican customers are already paying a temporary increase while the case is reviewed; if the full 2.89 dollar a month request is approved as filed it would stay in effect, and it does not involve data centers.
+$3a month