Wisconsin data center tracker

Every large or AI data center proposed in Wisconsin since 2023: who is building it, who is financing it, how much power it needs, what public incentives it gets, and where it stands. WDBC takes no side on where data centers are built. We want the terms in the open.

Current as of 14 October 2026

The interactive map needs JavaScript. The bottom line: about 4.1 GW of grid load and $37 billion are committed by three builders (Microsoft in Mount Pleasant and Kenosha, Vantage for Oracle and OpenAI in Port Washington, and Meta in Beaver Dam), while ten other large proposals are paused or cancelled.

Statewide

Power, law and what comes next

Power and rates

The PSC’s draft energy assessment ties about 4.17 GW, 72% of projected demand growth to 2032, to the three hyperscale projects R.
We Energies’ very large customer tariff (6630-TE-113) took effect 1 June 2026: 15-year terms, 100 MW threshold, the customer pays all dedicated generation V.
Pending large-load tariffs: Alliant 6680-TE-119, Xcel 4220-TE-119 (decision sought by Feb 2027), MGE 3270-TE-124.
Port Washington’s transmission line (137-CE-229) was refiled at $2.48B to $2.72B, up from $1.39B to $1.67B V.

State law

The 2023 sales tax exemption covers four certified projects: Microsoft, Epic, Meta and Oracle. The LFB puts the cost at about $1.5B during construction and $369M a year after V.
The 2025-26 session ended with no data center law. AB 840 passed the Assembly 53-44, but the Senate never took it up.
On 6 Oct 2026 four Republican legislators began circulating a bill to repeal the exemption.
Marquette poll, Aug 2026: 78% of voters say large data centers cost more than they bring R.

Coming up

14 Oct: Mount Pleasant Plan Commission on the revised Durand Avenue plan.
19 Oct: oral ruling expected in MMAC v. City of Port Washington (TIF referendum).
20 Oct (unconfirmed): Wisconsin Rapids council vote on the PNK permit.
3 Nov: Janesville GM/JATCO site referendum and the governor’s race.
More than 25 local moratoria passed in 2026, including Milwaukee (13 Oct, 13-0).

How to read the tracker

Each fact carries a label. V means we checked it against a primary source: a company release, a municipal record, a Public Service Commission filing, the Legislative Fiscal Bureau or an SEC filing. R means it was reported by the press or a third-party study. U means it comes from an industry tracker or our own inference and has not been confirmed. Where sources disagree, the project file says so.

The scope is projects of roughly 20 MW or $100 million and up, or any explicitly AI facility, announced since 2023. Investment and power columns show the largest figure stated for each project so the list can be sorted; read the project file for the phase and confidence behind it. Map locations are approximate, estimated from named roads or town centers, and are not parcel boundaries.

This is web research. Nobody was contacted. If you see an error or a missing project, tell us and we will check it.