Utility
We Energies and data centers
2 tracked data center projects in Wisconsin, 1.3 GW of planned capacity, large-load tariff approved.
Part of WEC Energy Group.
Tracked data center projects
| Project | Status | Planned capacity |
|---|---|---|
| Port Washington (Lighthouse) Data Center Campus Wisconsin | Under construction | 1.3 GW |
| Microsoft Fairwater Wisconsin | — |
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: 1.3 GW, plus 1 with no single capacity figure. A project served by two utilities counts in full for each.
Large-load tariff and rules
- Status
- Large-load tariff or rules approved (2026-04-24)
- Tariff
- Very Large Customer (VLC) tariff and Bespoke Resource tariff
- Docket
- 6630-TE-113, Public Service Commission of Wisconsin
- What it says
- The PSC approved the tariffs with modifications, including a 15-year minimum contract term and a 100 MW eligibility threshold (down from 500 MW); a later court challenge by Oracle was reported. (Data Center Knowledge)
Source excerpt
“extended the minimum contract term for these customers to 15 years”
Official forecasts of data center load
- WEC Energy Group says it expects electric demand growth in 2026-2030 driven largely by its Microsoft and Vantage data center customers. (WEC Energy Group, 2026-09)
Source excerpt
“expecting to add 3.9 GW (~45%) of electric demand”
- WEC's investor deck says the Vantage Port Washington site could grow over time. (WEC Energy Group, 2026-09)
Source excerpt
“Site potential up to 3.5 GW over time”
What sources say about customer bills
Sources finding both, or saying it depends
- Clean Wisconsin: Clean Wisconsin says the PSC's decision added reporting requirements meant to ensure other customers are not subsidizing data centers. (Clean Wisconsin (via Urban Milwaukee), 2026-04-24)
Source excerpt
“Required ongoing reporting requirements to help ensure WEPCO's other customers aren't subsidizing data centers.”
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: 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). We Energies and data centers. Retrieved from https://datacentercensus.com/utilities/we-energies |
|---|---|
| MLA | “We Energies and data centers.” Data Center Census, Oct 13, 2026, https://datacentercensus.com/utilities/we-energies. |
| Link | https://datacentercensus.com/utilities/we-energies |
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.