Last Update: 06/03/2026 at 5:01 AM EST
Wisconsin Data Center Tariff Shift
Coverage from WUWM, Wisconsin Public Radio, and others
Articles
7
Latest Article
06/01
Active Days
26
Executive Summary
Wisconsin regulators are moving large data centers away from one-off power deals and toward standardized tariffs, while approving Meta's Beaver Dam campus with protections for other ratepayers and ongoing disputes over transparency and cost allocation.
Key Points
- Wisconsin regulators approved electricity service for Meta's Beaver Dam hyperscale campus, but only with added protections for existing customers and future cost recovery rules.
- The Public Service Commission is pushing Alliant Energy away from confidential, project-by-project negotiations toward a standard tariff for data centers above 100 megawatts.
- Transmission upgrades are a major issue, with American Transmission Company building new facilities and regulators focusing on who pays for them if projects change or fail.
- Transparency remains contested: filings in the Beaver Dam case revealed multiple redacted data center proposals, and advocacy groups are challenging nondisclosure and document secrecy.
- The same regulatory approach is beginning to spread across utilities in Wisconsin, including separate tariff actions involving We Energies.
- Meta's Beaver Dam campus is the anchor project, but the broader issue is how Wisconsin will handle repeated requests from very large compute loads.
Featured Article
Wisconsin Public Service Commission approved Alliant Energy power terms for Meta's Beaver Dam campus and ordered a standard tariff rule for future 100 megawatt-plus data centers.
Coverage Timeline: 26 Days
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Additional Articles
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Wisconsin Public Service Commission approved a modified Alliant Energy contract on Thursday to supply electricity for Meta's Beaver Dam data center campus.
Scott Lauber said Wisconsin regulators approved special rates for very large data center customers as We Energies planned grid and generation investments for projected gigawatt demand growth.
Wisconsin PSC approved Alliant Energy and Meta contract terms for a Beaver Dam data center while ordering a standardized framework to protect other customers from future transmission-cost impacts.
On May 21, the Public Service Commission of Wisconsin issued an order in the We Energies very large customer case affecting power-cost rules for hyperscale data centers.
Wisconsin PSC ordered Alliant Energy to file standardized data center tariffs above 100 MW after approving a modified Meta Beaver Dam contract.
Alliant Energy told the Wisconsin Public Service Commission in a Beaver Dam rate case that Wisconsin Power & Light received 12 2025 data center proposals, mostly redacted.