Data Center Registry

Town of Janesville Data Center Inquiry (Polzin/Fenric Roads)

Janesville, Rock County, Wisconsin

ProposedOpposedRecord updated September 13, 2026

Town of Janesville Data Center Inquiry (Polzin/Fenric Roads) is a proposed data center in Janesville, Wisconsin (Rock County), operated by Undisclosed (approached through a San Diego-based consulting firm). The public record puts it at 80 acres. 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

Proposed

Operator: Undisclosed (approached through a San Diego-based consulting firm)
Facility type: Data center
Location: North Polzin Road at West Fenric Road, Janesville, Rock County, WI
Coordinates: 42.7158, -89.1217 (approximate)
Power capacity: Not established from a public source
Land: 80 acres
Investment: Not established from a public source
Announced: Not established from a public source
Utility: Not established from a public source
Cooling: Not established from a public source
Water use: Not established from a public source
Jobs: Not established from a public source
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.

April 2026
Proposed
The town received a letter proposing the concept of a data center on 80 acres of farmland at the corner of North Polzin Road and West Fenric Road, near dozens of homes; contact came through a San Diego-based consulting firm. Rock County planning staff described it as "more speculative" with no application filed, and the town board said no NDAs were signed. Source: Spectrum News 1 Wisconsin

Opposition and litigation at this site

Yes. Organized local opposition to Town of Janesville Data Center Inquiry (Polzin/Fenric Roads) in Janesville, Rock County, Wisconsin is documented in the public record, without a lawsuit on file in the sources we track. An opposition petition gathered roughly 100 signatures per the town clerk, who said he had "never seen a proposal like this in the town." The Town of Janesville board subsequently approved a data center moratorium, one of several Rock County townships to do so.

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.

An opposition petition gathered roughly 100 signatures per the town clerk, who said he had "never seen a proposal like this in the town." The Town of Janesville board subsequently approved a data center moratorium, one of several Rock County townships to do so.

Source: Spectrum News 1 Wisconsin

Notes on the record

The third of three Rock County data center proposals and the only one not already tracked here: the other two are the City of Janesville / former GM site (Viridian Acquisitions, tracked as viridian-apecs-janesville-wi) and the Town of Beloit quarry campus (tracked as cambrin-project-cornmaze-town-of-beloit-wi, since taken over by Panattoni Development and extended into the Town of Turtle as "Project Cornmaze"). This is in the unincorporated TOWN of Janesville, not the city. The end user has never been named; one leaked email referenced an entity called IGNIS, which no fetched source corroborates, so the operator field records only what is verifiable. Coordinates are a street-level geocode of North Polzin Road, not a parcel.

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
Permanent jobs promised
Which utility serves it

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.
Permanent jobs promised: The economic development application or incentive agreement, which usually states a job commitment and a clawback.
Which utility serves it: The electric service agreement or the utility's filing with the state public utility commission.

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.

APECS Data Center Campus (Former GM Assembly Plant) · Janesville · Viridian Acquisitions LLC6 mi · Proposed · 800 MW · Contested
Project Cornmaze Data Center (Town of Beloit) · Beloit · Cambrin LLC10 mi · Proposed
US Signal WI02 Madison (Fitchburg) · Fitchburg · US Signal25 mi · Operating · 6 MW
EdgeConneX Madison (MAD01) · Madison · EdgeConneX25 mi · Operating
Lumen Madison 1 · Madison · Lumen Technologies28 mi · Operating
Epic Hosting Verona Data Center · Verona · Epic Hosting, LLC (Epic Systems)29 mi · Permitted

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Questions people ask about this site

Is there opposition to the Town of Janesville Data Center Inquiry (Polzin/Fenric Roads) in Janesville?

Has anyone filed a lawsuit over the Town of Janesville Data Center Inquiry (Polzin/Fenric Roads)?

No lawsuit over Town of Janesville Data Center Inquiry (Polzin/Fenric Roads) appears in the record we track as of September 13, 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 Town of Janesville Data Center Inquiry (Polzin/Fenric Roads) use?

No water withdrawal figure for Town of Janesville Data Center Inquiry (Polzin/Fenric Roads) 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 Town of Janesville Data Center Inquiry (Polzin/Fenric Roads), and how big is it?

Undisclosed (approached through a San Diego-based consulting firm) is the operator on record. No capacity figure is on record for this site. The site is recorded at 80 acres.

How to cite this page

SueDataCenters.org Data Center Registry, "Town of Janesville Data Center Inquiry (Polzin/Fenric Roads)," updated September 13, 2026, https://suedatacenters.org/data-centers/town-of-janesville-data-center-rock-county-wi.

Facility data from Compute Atlas (E. Kubiak), version 1.34.0 (September 21, 2026), licensed CC BY 4.0, record https://www.compute-atlas.com/facilities/town-of-janesville-data-center-rock-county-wi, retrieved October 1, 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.Rock County sees third data center proposal request · Spectrum News 1 Wisconsin · retrieved September 13, 2026
2.The Rock County data center fight: Janesville's three proposals and the vote that could decide them · 608 Scanner · retrieved September 13, 2026
3.More Rock County townships are seeking data center moratoriums · Janesville Gazette (GazetteXtra) · retrieved September 13, 2026
4.OpenStreetMap/Nominatim geocode of North Polzin Road, Town of Janesville, Rock County, WI (coordinate provenance) · OpenStreetMap contributors · retrieved September 13, 2026

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