Utility
Ameren Illinois and data centers
2 tracked data center projects in Illinois, 1.13 GW of planned capacity.
Part of Ameren.
Tracked data center projects
| Project | Status | Planned capacity |
|---|---|---|
| CyrusOne Sangamon County Data Center Illinois | Approved | 634 MW |
| Logan Prairie Data Center Illinois | Proposed | 500 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: 1.13 GW. A project served by two utilities counts in full for each.
Large-load tariff and rules
We have not yet reviewed this utility’s large-load rules.
Official forecasts of data center load
No sourced load forecast yet.
What sources say about customer bills
No sourced findings on bill effects yet.
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: Illinois. 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). Ameren Illinois and data centers. Retrieved from https://datacentercensus.com/utilities/ameren-illinois |
|---|---|
| MLA | “Ameren Illinois and data centers.” Data Center Census, Oct 13, 2026, https://datacentercensus.com/utilities/ameren-illinois. |
| Link | https://datacentercensus.com/utilities/ameren-illinois |
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.