Sue Data Centers

Data Center Registry

Cassville Data Center Campus (Undisclosed Developer)

Cassville, Grant County, Wisconsin

CancelledOpposedAI likelyRecord updated August 4, 2026

Cassville Data Center Campus (Undisclosed Developer) is a cancelled data center in Cassville, Wisconsin (Grant County), operated by Undisclosed (major tech company, NDA not signed). The public record puts it at announced December 2024, 500 acres, a reported $1 billion investment. It faces documented, organized local opposition.

Every line on this page traces to a public source listed at the bottom. Where a figure was looked for and not found, the row says so. A blank is never a zero.

Facility record

Cancelled

Operator
Undisclosed (major tech company, NDA not signed)
Facility type
Data center, AI use likely
Location
Cassville, Grant County, WI
Coordinates
42.7160, -91.0070
Power capacity
Not established from a public source
Land
500 acres
Investment
$1 billion
Announced
December 2024
Utility
Alliant Energy
Power source
Grid
Cooling
Not established from a public source
Water use
Not established from a public source
Jobs
50 permanent
Public subsidy
Not established from a public source
Community reception
Opposed
Source confidence
Reported by at least one credible outlet or filing

Timeline from the record

Newest first. Record entries come from the filings and reports the registry cites. Coverage entries are headlines from publisher feeds we monitor daily, linked to the outlet; last checked September 14, 2026.

  1. April 2026
    Cancelled
    Town of Cassville voters approved 44-0 an ordinance banning data centers in the township on April 16, 2026; developer went silent after the vote and was reported considering sites in Indiana and North Dakota Source: Wisconsin Watch
  2. December 2024
    Proposed
    Grant County Economic Development Corp. disclosed proposal for $1B-$2B campus; developer identity withheld; proximity to Cardinal-Hickory Creek transmission line cited as appeal Source: Wisconsin Watch

Opposition and litigation at this site

Yes. Organized local opposition to Cassville Data Center Campus (Undisclosed Developer) in Cassville, Grant County, Wisconsin is documented in the public record, without a lawsuit on file in the sources we track. Residents voted 44-0 (April 16, 2026) to ban data centers in the township.

How the community has taken it

Reception is a sourced signal, not an editorial judgment: opposed means documented, organized local opposition is the dominant signal on record.

Residents voted 44-0 (April 16, 2026) to ban data centers in the township. 'No Data Centers in the Driftless' Facebook group reached 2,700 members. Community cited loss of farmland and rural character in Wisconsin's Driftless Area.

Source: Wisconsin Watch

Notes on the record

Coordinates are Cassville city centroid; proposed site was ~400-500 acres in the town of Cassville. Grant County ED director confirmed company 'people will recognize' but declined to name it. Energy requirement estimated at 400-500 MW (per Wisconsin Watch, citing economic development director estimate). Investment range $1B-$2B; investmentUsd represents the floor. Town vote was April 16, 2026: 44-0 to ban data centers (ordinance lasts up to two years). Developer went silent post-vote and was reportedly considering Indiana and North Dakota sites.

What the record does not establish, and the document that would

In every fight on our tracker the decisive fact came out of a public records request. These are the requests for this site.

  • Power capacity in megawatts
  • Cooling method and water use
  • Tax abatements or other public subsidy
Which document closes each gap
Power capacity in megawatts
The utility's large load service agreement, the interconnection request in the grid operator's queue, or the electrical site plan in the permit file.
Cooling method and water use
The water service agreement, any groundwater appropriation permit, and the mechanical narrative in the site plan.
Tax abatements or other public subsidy
The abatement, PILOT, or development agreement approved by the county, city, or development authority, and the state's data center sales tax exemption certificate if one was issued.

Have one of these documents? Send it to us and we will add it to the record with attribution.

Other sites within 30 miles

Distances are between recorded coordinates, many of which are a city or county centroid, so treat them as approximate. Cumulative load on one utility and one aquifer is the question a planning commission rarely asks.

Questions people ask about this site

Is there opposition to the Cassville Data Center Campus (Undisclosed Developer) in Cassville?

Yes. Organized local opposition to Cassville Data Center Campus (Undisclosed Developer) in Cassville, Grant County, Wisconsin is documented in the public record, without a lawsuit on file in the sources we track. Residents voted 44-0 (April 16, 2026) to ban data centers in the township.

Has anyone filed a lawsuit over the Cassville Data Center Campus (Undisclosed Developer)?

No lawsuit over Cassville Data Center Campus (Undisclosed Developer) appears in the record we track as of August 4, 2026. Residents most often reach a lawyer over water supply, well drawdown, noise from cooling plant, property value, or a rezoning approved without the notice the ordinance required. If any of that is happening near this site, it is worth a review whether or not a case has been filed yet.

How much water does Cassville Data Center Campus (Undisclosed Developer) use?

No water withdrawal figure for Cassville Data Center Campus (Undisclosed Developer) is on record here. Water use is rarely published voluntarily; it usually surfaces through a utility service agreement or a state withdrawal permit, both of which are public records. We leave the number blank rather than estimate one.

Who operates Cassville Data Center Campus (Undisclosed Developer), and how big is it?

Undisclosed (major tech company, NDA not signed) is the operator on record. No capacity figure is on record for this site. The site is recorded at 500 acres.

How to cite this page

SueDataCenters.org Data Center Registry, "Cassville Data Center Campus (Undisclosed Developer)," updated August 4, 2026, https://suedatacenters.org/data-centers/cassville-grant-county-wi.

Facility data from Compute Atlas (E. Kubiak), version 1.32.0 (September 7, 2026), licensed CC BY 4.0, record https://www.compute-atlas.com/facilities/cassville-grant-county-wi, retrieved September 14, 2026.

Corrections with a public source are welcome at the Compute Atlas record or through our contact page. The whole registry is available as CSV and JSON under CC BY 4.0.

Sources for this record

As compiled and cited by Compute Atlas, with our own reporting appended. Archived links are used where the original has moved.

  1. 1.Another $1 billion Wisconsin data center eyed in Grant County town of Cassville · Wisconsin Watch · retrieved July 6, 2026
  2. 2.Another billion-dollar Wisconsin data center is eyed for Cassville in Grant County · PBS Wisconsin · retrieved July 6, 2026
  3. 3.In rural Wisconsin, a town rejects a plan to build a massive data center · Wisconsin Watch · retrieved July 6, 2026
  4. 4.HIFLD Electric Retail Service Territories (ORNL/DOE-CESER, 2023-08 vintage) · Oak Ridge National Laboratory (ORNL) / HIFLD · retrieved July 23, 2026
  5. 5.A $2 billion proposal, then silence: How a Driftless Area data center deal fell apart · Wisconsin Watch · retrieved August 4, 2026

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