Why developers come here
Wisconsin’s hyperscale story began with the former Foxconn site in Mount Pleasant, where Microsoft is building its Fairwater campus on land and infrastructure Racine County had already assembled. That precedent, plus a 2023 sales tax exemption, cool weather that cuts cooling costs, Lake Michigan water, and two utilities willing to build generation for large loads, brought Vantage and OpenAI’s roughly 1,000 MW Stargate Lighthouse campus to Port Washington and Meta’s $1 billion campus to Alliant Energy’s Beaver Dam Commerce Park.
Industrial power is not cheap here (8.54 cents per kWh in 2024 per EIA, the highest of the Great Lakes states), and the state is in MISO, whose interconnection is slower than ERCOT’s. What Wisconsin offers instead is utilities and municipalities that will pre-build sites and substations, and a Legislative Fiscal Bureau estimate that shows how large the tax benefit is: about $1.5 billion in forgone sales tax during construction of the announced projects and $369 million a year once they operate.
Incentives
- Sales and use tax exemption. Wisconsin Statutes 77.54(70), created in the 2023-25 state budget, exempts property used exclusively to build or run a qualified data center: servers, networking, cabling, racks, substations, uninterruptible power and backup generation, cooling systems, monitoring equipment, and the electricity the center consumes. Under 238.40 the Wisconsin Economic Development Corporation (WEDC) certifies a data center that commits to invest, within five years, at least $150 million in a county over 100,000 people, $100 million in a county of 50,001 to 100,000, or $50 million in a county of 50,000 or fewer. Purchases before the certification date do not qualify, WEDC must revoke certification if the threshold is missed, and there is no cap on the exemption amount.
- Local property tax. Wisconsin uses tax incremental districts (TIDs) rather than abatements; Port Washington and Mount Pleasant both created TIDs to fund infrastructure for their campuses. Port Washington voters now require a referendum for any TID of $10 million or more.
- 2026 legislation. AB 840, a Republican bill requiring the PSC to keep data center infrastructure costs off other customers and requiring renewable projects serving a center to sit on its site, passed the Assembly 53-44 on January 20, 2026 but never got a Senate vote; environmental groups, labor, utilities, and the industry all criticized it. SB 969 and AB 1036 would have banned data center NDAs. None passed, leaving the exemption unchanged.
Power
Wisconsin is in MISO. We Energies (WEPCO) serves the Lake Michigan corridor including Mount Pleasant and Port Washington; Alliant’s Wisconsin Power and Light serves Beaver Dam; American Transmission Company owns most of the transmission. Clean Wisconsin and WPR have reported that the announced data centers could double We Energies’ demand by 2030.
The Public Service Commission of Wisconsin decided We Energies’ Very Large Customer and Bespoke Resources tariffs on April 24, 2026 (Docket 6630-TE-113) with major changes. It lowered eligibility from 500 MW to 100 MW, set a minimum initial term of 15 years, removed a “capacity-only” option that would have let data centers pay only 75 percent of generation costs so that very large customers pay 100 percent of resources built for them, required revisions to guard against transmission cost shifting, and added reporting on utility agreements with these customers. The PSC also approved Alliant’s Meta contract in May 2026 while criticizing the confidentiality around it. The PSC has said plainly that it does not permit or regulate data center construction itself; that is a local matter.
Where the projects are
Racine County (Microsoft Fairwater in Mount Pleasant), Ozaukee County (Stargate Lighthouse in Port Washington), and Dodge County (Meta Beaver Dam) are the three active hubs. Rock County has a proposed conversion of the former General Motors site in Janesville, and Dane County has smaller enterprise projects near Verona. Reports of unsolicited land offers have surfaced in Brown County.
Local politics
Port Washington became the first U.S. city to pass an anti-data-center referendum in the April 2026 election: about 66 percent of voters approved an ordinance requiring voter approval for any TID with costs or base value of $10 million or more, a direct response to the $15 billion Lighthouse project already under construction under an agreement the city had signed. Janesville will vote in November 2026 on restrictions for developments over $450 million at the former GM plant. Microsoft dropped a 240-acre proposal in Caledonia after opposition. Marquette Law School polling found the share of voters saying data center costs outweigh benefits rose from 55 percent in October 2025 to 70 percent in February 2026, the largest shift on any issue in 14 years of the poll, with majorities of both parties. Concerns are power bills, water, farmland, and TIDs negotiated under NDAs.
Beaver Dam is the counter-example: the mayor welcomed Meta for the “increased tax base and additional jobs,” the city issued permits quickly, and Meta committed nearly $200 million in substation and transmission upgrades, 100 percent renewable matching, and roughly 570 acres of wetland and prairie restoration. Mount Pleasant officials have likewise treated Microsoft as the recovery from the Foxconn disappointment.
What a landowner should know
Wisconsin developers want 300 to 700 acres near a 138 kV or 345 kV ATC line and, ideally, a municipality willing to create a TID and extend water and sewer; Beaver Dam and Mount Pleasant were both utility- or county-assembled parks. Option agreements are standard, often with a municipal development agreement running in parallel, and towns (unincorporated areas) usually have to annex to a city or village to get utilities, so ask whether the buyer plans an annexation. Because Port Washington-style referendum ordinances and the November Janesville vote show TIDs can now be put to voters, a deal that depends on TID financing carries a new approval risk. Expect a five-year investment clock tied to WEDC certification. The state contact is the Wisconsin Economic Development Corporation. Wisconsin has no state disclosure rule for these land deals and NDAs remain legal after the 2026 bills failed.