Utility
Alliant Energy and data centers
3 tracked data center projects in Iowa, Wisconsin, 1.27 GW of planned capacity.
Tracked data center projects
| Project | Status | Planned capacity |
|---|---|---|
| QTS Cedar Rapids Data Center Campus Iowa | Under construction | 1.05 GW |
| Viridian Data Center Campus (former GM/JATCO site) Wisconsin | Cancelled | 800 MW |
| Meta Beaver Dam Data Center Wisconsin | Under construction | 220 MW |
Capacity is the planned figure each project publishes (utility load or IT load as the record notes). Total for proposed, approved, under-construction and operating projects: 1.27 GW. A project served by two utilities counts in full for each.
Large-load tariff and rules
No large-load tariff found. We looked at Iowa Utilities Commission and IPL large load/data center tariff searches (none found); PSC of Wisconsin press release on WPL docket 6680-TE-115. That is a statement about our review, not proof that none exists.
Official forecasts of data center load
- Alliant reports its total contracted data center demand across Iowa and Wisconsin. (Alliant Energy, 2026-04-30)
Source excerpt
“total contracted data center demand is now approximately 3.4 GW”
- Alliant reported a new Iowa data center agreement. (Alliant Energy, 2026-04-30)
Source excerpt
“Signed an approximately 370 MW electric service agreement in Iowa”
What sources say about customer bills
Sources saying customers are protected, or bills are lower than they would be
- Public Service Commission of Wisconsin: The PSC says its decision on the Meta contract protects existing customers and increases transparency. (Public Service Commission of Wisconsin, 2026-05-07)
Source excerpt
“issued a decision that protects existing customers and improves public transparency and visibility.”
- Brattle Group (study commissioned by Alliant Energy): A study commissioned by Alliant says its ratemaking is designed so large load customers cover at least their incremental cost. (The Brattle Group (commissioned by Alliant Energy), 2026-06-10)
Source excerpt
“large load customers pay at least the incremental cost of serving them”
Sources finding both, or saying it depends
- Brattle Group (study commissioned by Alliant Energy): The same study says long-run price effects depend on whether load-growth revenue outpaces new infrastructure costs. (The Brattle Group (commissioned by Alliant Energy), 2026-06-10)
Source excerpt
“will depend in part on whether revenue from load growth outpaces the cost of new infrastructure investment”
These are statements by regulators, utilities, advocates and researchers about this utility or its region. They are not a prediction of any customer’s bill, which depends on rates, usage and regulator decisions.
More
States: Iowa, Wisconsin. Look up another utility · All utilities · Power tracker · Energy news · Tax breaks tracker
Cite this page
Last updated Oct 13, 2026. Figures may change as records are updated — include the date you retrieved them.
| APA | Data Center Census. (2026). Alliant Energy and data centers. Retrieved from https://datacentercensus.com/utilities/alliant-energy |
|---|---|
| MLA | “Alliant Energy and data centers.” Data Center Census, Oct 13, 2026, https://datacentercensus.com/utilities/alliant-energy. |
| Link | https://datacentercensus.com/utilities/alliant-energy |
Republishing a figure or table? Attribute it to Data Center Census with a link to this page. The underlying data is downloadable as JSON and CSV; the press kit has standing figures and contact details.