Data centers have made headlines and influenced the political debate across Wisconsin this year.
That’s why earlier this year we launched Data(Centers)Watch as a regular feature in Forward, our free Wisconsin government and politics newsletter that comes out on Mondays. Every week since mid-February, reporter Tom Kertscher has provided tidbits of data center news, including the latest from city council and county board meetings where land use decisions are being made amid public outcry, national industry news and recent polling about the issue.
To get these data center updates each Monday, please subscribe. Here’s a look at the updates that appeared in Forward since March.
April 13, 2026
From ballot box to court: The reportedly first data center referendum in the U.S. could make large-scale developments more difficult in Port Washington. Approved last Tuesday by voters in the Ozaukee County city, it was pushed by opponents of the $15 billion data center under construction there. The city now must get referendum approval to create any tax incremental finance district — a business development tool — worth over $10 million. The city created a $175 million TIF district for the data center. Attention now turns to the courts. A hearing is set for Thursday on a business-backed lawsuit seeking to block the referendum from taking effect.
Second poll: Costs outweigh benefits: Some 70% of registered Wisconsin voters believe the costs of data centers outweigh the benefits, according to a Wisconsin Conservation Voters poll taken in February and released last week. The same result was found in a February Marquette Law School poll.
Add-on data center approved: With a $1 billion data center under construction, Beaver Dam has approved a second, much smaller, $40 million data center.
Data center opponent elected: Menomonie City Council member Matthew Crowe, an opponent of a data center proposed for Menomonie, unseated incumbent Mayor Randy Knaack in Tuesday’s election. Crowe cited lack of transparency over the data center proposal as a key to his win. Menomonie is among several Wisconsin communities that signed nondisclosure agreements to hide details of the proposals.
ICYMI: We’ve been discussing our coverage of data center secrecy deals. Recent spots: WUWM radio’s “Lake Effect” show (segment starts at 11:15), Civic Media’s “Nite Lite” show (starts at 23:30) and the Ventures of the Land podcast. We reported that Wisconsin companies are part of a coalition asking a federal agency to pause competitive bidding for electrical transmission projects needed to serve data centers.
April 6, 2026
Cure for blight? The $8 billion data center proposed for Janesville is unique in that it would involve a $30 million cleanup of the contaminated General Motors plant, which shut down in 2008. The cleanup cost has led 200 potential developments of different types to walk away, the energy and environment-focused E&E News reports. Also noteworthy is this quote from the city manager about power: “One of the most glaring needs that has not yet been addressed is statewide legislation to clarify that data centers pay for 100% of their costs.”
Referendum on Tuesday’s ballot: A referendum that could make large-scale developments more difficult is on Tuesday’s election ballots in Port Washington. It was pushed by opponents of the $15 billion data center under construction there. If the referendum is approved, the city would have to get referendum approval to create any tax incremental finance district — a business development tool — worth over $10 million. The city created a $175 million TIF district for the data center.
Limiting public comment: The city council in Beaver Dam, where one hyperscale data center is under construction and a smaller one is proposed, limited the public comment at its meeting last week to 20 minutes. That irked some data center opponents because the period is usually open-ended, though each individual is asked to speak for two minutes. Mayor Bobbi Marck told Wisconsin Watch several items were likely to involve lengthy discussion and the comment limit was meant to use the council’s time effectively. All 10 speakers criticized data centers and the council, including Jackson Brook, 18, who said the council made data center decisions too quickly and without enough public input.
Legislative intent/inaction on NDAs: Commenting on the Legislature ending its 2025-26 session without approving any data center bills, Milwaukee data center attorney Rod Carter cited legislation that would have prohibited local governments from signing nondisclosure agreements with data center developers. “The legislative intent was clear: the era of secret data center deals in Wisconsin should be over,” he wrote. “Whether that intent becomes law remains an open question.”
March 30
Town chair calls cops on petitioner: In Grant County, which is one location being considered for a $1 billion data center, Waterloo town chair Chad Brinkman called the sheriff’s office March 21 asking that resident Richard Stelpflug be removed from public property. Stelpflug was collecting signatures on a petition seeking to have the town authorize “village powers” — which the neighboring town of Cassville did March 12 to try to get more control over any data center proposal. A sheriff’s deputy informed Brinkman that Stelpflug had a First Amendment right to circulate a petition on public property — which happened to be the Waterloo Township Shop and Hall. As it turns out, the town already adopted village powers in 1965. An update on where Grant County stands among sites being considered is expected soon.
Rock County also signed NDA: A Rock County Board committee voted down a resolution prohibiting county employees from signing nondisclosure agreements. Pointing to data center NDAs, the resolution cited concerns “across Wisconsin that the signing of an NDA without the input of the public and elected officials is unethical and risks the public trust.” Wisconsin Watch reported that the town of Beloit in Rock County signed an NDA in February 2025, more than a year before announcing this month that a data center has been proposed. Last week, Rock County responded to a Wisconsin Watch public records request showing it signed an NDA with the same company, Delaware-based Cambrin LLC, in January 2025. Janesville, about 10 miles northeast of the town of Beloit, has also signed a data center NDA, with Colorado-based Viridian Acquisitions.
Alliant Energy’s record stock price: Madison-based Alliant Energy’s record-high closing stock price reached $73.03 on March 16. The main reason, according to The Motley Fool: an influx of data centers in the Midwest, including one under construction in Beaver Dam.
AI fear fuels opposition? Some opposition to data centers might stem from uneasiness about artificial intelligence. The Marquette Law School Poll found 69% of Wisconsin registered voters surveyed said AI is being developed too quickly. The same percentage said the costs of data centers outweigh the benefits.
ICYMI: Wisconsin Watch looked at competition over who builds out the grid as data centers demand more power.
March 23
No data center legislation: The Legislature considered a number of data center bills but concluded its work in the 2025-26 session without passing any of them. That means data center legislation won’t come up again until the Legislature’s next regular session begins in January. One of the bills, to ban nondisclosure agreements between data center developers and local governments, was introduced by Rep. Clint Moses, R-Menomonie. He told Wisconsin Watch his bill was crowded out by other priorities, but that he’s hopeful it will eventually pass. Also disappointed was GOP Assembly Speaker Robin Vos. He said at an event that requiring data centers to pay for their own electricity, as some legislation would require, is “probably an 80% issue for the public.”
Opposition in Grant County: Cassville township residents voted 54-3 this month to authorize “village powers.” The move gives the township more control over matters such as zoning. It was sought by residents who want more control over any data center proposal. A developer has included Cassville, in the Driftless Area in southwest Wisconsin, as one possible site for a planned $1 billion data center.
ICYMI: Microsoft announced it would stop doing NDAs with local governments amid growing focus on local governments and data center secrecy. We explored data centers’ job implications, particularly for developers, construction and operations. We also fact-checked a claim that Mount Pleasant’s massive data center will use relatively little water. Go here to see our data centers coverage in one place.
March 16
‘Bulletproof’ vest in Port: Port Washington police have been called about a dozen times to Lighthouse, the Vantage-OpenAI-Oracle data center campus, since the construction groundbreaking Dec. 17. Police reports show the largest number involve complaints of either trespassing or excessive construction noise. But on Dec. 26, a security officer on the site reported being told by a motorist she “hopes the vest they wear is really bulletproof.” Police called the motorist and left a voicemail message, according to the report. The motorist did not return calls and emails from Wisconsin Watch.
‘Stranded assets’ targeted: One of the Democratic candidates for governor, former Lt. Gov. Mandela Barnes, announced a plan to prohibit residential and other utility customers from having to cover the cost of “stranded assets” — power plants that have been shut down but on which debt is still owed. Wisconsin Watch reported in December that ratepayers owe $1 billion for stranded assets and that the rush to build more plants to serve data centers runs the risk of creating more stranded assets.
‘Stranded assets’ targeted II: In a model for state data center legislation, the University of Wisconsin-Milwaukee Center for Water Policy proposed making data center companies financially responsible for stranded assets. The companies would be required to post a bond.
Beaver Dam limits public comment: The city council in Beaver Dam, where one data center is under construction and another is proposed, is limiting to 20 minutes total the public comment at its meeting tonight. That raised concerns among data center opponents, some of whom packed a town hall meeting on data centers last week. Typically, the council’s public comment period is open-ended, though individuals are each asked to limit their remarks to two minutes. Mayor Bobbi Marck said several items are likely to involve lengthy discussion and the comment limit is meant to use the council’s time effectively. Ald. Nancy Wild said data center opponents have spoken at the previous eight council meetings. “I think we have been very reasonable,” she said.
March 9
Quietly, a possible Beloit data center: News of a possible data center in the town of Beloit comes eight months after the town quietly signed a predevelopment agreement. Last week, the town, saying it was responding to information “being disseminated” about a possible data center, announced it had begun “very preliminary discussions,” including signing the agreement. The town board in May approved negotiating a predevelopment agreement with Delaware-based Cambrin LLC, but the meeting minutes do not mention a data center. The predevelopment agreement, signed in July, also does not mention a data center. It says that the town will pursue a tax incremental district to finance infrastructure improvements that would be needed and that Cambrin agreed to reimburse the town up to $175,000 for preliminary work. “If the project actually moves forward, we would have a frank discussion with the developer about who should be paying for any improvements that are needed,” town administrator John Malizio told Wisconsin Watch. News reports indicate that Meta, the owner of Facebook and Instagram, could be the data center operator.
Data centers’ $1 billion for Wisconsin: Even before the first hyperscale data center begins operation in Wisconsin, data centers have made an economic impact in the state. No comprehensive tally has been done. But just three Wisconsin companies have received more than $1 billion of business supplying data centers, and other companies are benefiting, too, Wisconsin Watch found. That’s separate from the economic impact from constructing data centers.
Electric-onnections: The data centers under construction in Mount Pleasant and Port Washington came together because a We Energies executive met the co-founder of Cloverleaf Infrastructure, which secures power and land for data centers, The New York Times reported. “We’ve got the site for you,” the executive said at a Chicago conference in 2021, proposing Mount Pleasant and, later, Port Washington.
March 2
Who pays for the power: The state Public Service Commission held a hearing last week on who will pay for providing the electricity needed to run the $1 billion data center being constructed in Beaver Dam. The center is owned by Meta, the owner of Facebook and Instagram. Opponents said the rate structure proposed by Alliant Energy doesn’t protect general ratepayers from bearing some of the costs. The same concerns have been raised to the PSC about We Energies’ proposed rates for data centers in Mount Pleasant and Port Washington. Comments on the Alliant case can be submitted through March 9. That deadline was extended after Alliant agreed to remove some redactions it made in its application to the PSC.
Legislation delayed, in doubt: One bill on data centers might see action, but others are likely on ice now that the state Assembly has adjourned for the 2025-26 session. The Senate could still act on an Assembly-approved bill that seeks to limit how much general ratepayers can be charged by utilities for the cost of providing electricity to data centers. It’s likely that various bills that would prohibit local governments from signing nondisclosure agreements with data center developers won’t be considered again until a new Legislature convenes in January.
Blocking a possible data center: A move is afoot to block a possible data center in Grant County in southwest Wisconsin. Doug Schauff, the town chair in Cassville, said the town will hold a meeting March 12 on adopting “village powers.” That, in turn, would enable the town to create zoning that would regulate projects such as a data center. A data center developer has told the town it is considering the Cassville area, among other locations, for a possible $1 billion facility.
Port Washington referendum: An April 7 referendum in Port Washington pushed by data center opponents can proceed as scheduled, a judge ruled last week. Pro-business groups had sued to try to stop the vote. If the referendum is approved, the city would have to get referendum approval to create any future tax incremental finance district – a business development tool – worth over $10 million. The city created a $175 million TIF district for the $15 billion Open AI/Oracle data center now under construction in Port Washington.
From DeForest to Iowa: Virginia-based QTS Data Centers will build in Iowa a data center it had planned for the Madison suburb of DeForest, according to Alliant Energy, which will supply the electricity. Amid community opposition, the $12 billion facility proposed for DeForest was abruptly dropped in January after Wisconsin Watch reported that village officials had worked on the proposal for months before announcing it to the public.
Voters down on data centers: Regardless of how much they have heard about data centers, most registered Wisconsin voters polled by Marquette Law School said the costs outweigh the benefits. Opposition was 74% among those who have heard a lot about data centers, 73% among those who had heard nothing at all and 68% who had heard a little.
Expect delays? Some 30-50% of data centers projected to open worldwide in 2026 could be delayed, according to the Sightline Climate research firm: Access to electricity is a key reason, and more data center operators are building their own power rather than relying on the grid.
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