How many data centers are in Wisconsin?

More Than Just Parks tracks 66 active data center facilities in Wisconsin, each citing a public source: 54 operating, 5 under construction and 7 proposed. 16 more were canceled, withdrawn, suspended or blocked.

Where are the data centers in Wisconsin?

Wisconsin's data centers are in 22 counties. The most are in Milwaukee County (17), Dane County (11) and Waukesha County (5). The busiest places are around Madison, Sturtevant and Janesville.

How much electricity do Wisconsin's data centers use?

We don’t publish a state total, and the reason matters: about seven in ten facilities here never disclose a capacity, so any sum would look like a census of Wisconsin's data center load while leaving out the sites that stayed quiet. Each facility page shows the figure its own source states. A single large campus can draw as much power as a small city.

Are Wisconsin data centers near protected land?

3 of the tracked facilities in Wisconsin sit within 10 miles of protected public land, measured to the real boundary of the nearest national park, wilderness area, wildlife refuge or conservation area; none sit within a single mile.

Which county in Wisconsin has the most data centers?

Milwaukee County has the most, with 17 tracked data centers, followed by Dane County (11) and Waukesha County (5).

Are there proposed data centers in Wisconsin?

Yes. We track 7 proposed data centers in Wisconsin, including Adrian Township Data Center (Nodiac), Metered Mining Hammond Data Center and QTS Madison Data Center. One of them sits within 10 miles of protected public land.

Who is building data centers in Wisconsin?

The most active operators in Wisconsin are Microsoft (4 sites), Expedient (2 sites) and Data Holdings (2 sites), counted by sites, not megawatts.

66 Data Centers in Wisconsin (WI): Map, Proposed Sites

Find data centers near you in Wisconsin

Type your ZIP code or your town and you’ll see what’s proposed, going up and already running near it, and how close each one sits to protected land. A ZIP opens its own page you can bookmark and share.

Know of a data center we’re missing? Tell us.

Who’s building in Wisconsin

Proposed data centers in Wisconsin

7 proposed data centers are on the record in Wisconsin. By county, then name.

Data centers under construction in Wisconsin

5 data centers are under construction in Wisconsin. By county, then name.

Data centers operating in Wisconsin

54 data centers are operating in Wisconsin. By county, then name.

Projects stopped or paused

16 proposed projects in Wisconsin were voted down, withdrawn, canceled or held by a moratorium. Each project’s page links the source for how it ended.

Closest to protected land

Distance is to the boundary of the nearest protected unit; open a facility to see which.

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Map of data centers in Wisconsin

Map of the 66 data centers in Wisconsin tracked by More Than Just Parks, updated October 2026 — Every light is a facility we can tie to a public source, drawn October 2026. Map by More Than Just Parks, free to share and embed with the credit link.

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Every tracked facility in Wisconsin

66 facilities across 22 counties, the busiest first. Open a county to see its facilities; each one opens its own record.

Milwaukee County 17 operating17

Dane County 1 proposed 1 under construction 9 operating11

Waukesha County 5 operating5

Ozaukee County 2 under construction 2 operating4

Racine County 4 operating4

Kenosha County 1 proposed 2 operating3

Wood County 1 under construction 2 operating3

Dodge County 1 proposed 1 under construction2

Eau Claire County 2 operating2

Outagamie County 2 operating2

Rock County 1 proposed 1 operating2

Brown County 1 operating1

Netsonic Wisconsin DatacenterSmall

Calumet County 1 operating1

Ark Data Centers Harrison (formerly Involta)Mid-size · 20 MW

Dunn County 1 operating1

West Wisconsin Telcom Data CenterSmall

Manitowoc County 1 proposed1

AI Data Center Project (Cloverleaf Infrastructure, Mishicot)Campus

Marathon County 1 operating1

Wildcard One Data CenterSmall

Monroe County 1 proposed1

Adrian Township Data Center (Nodiac)Mid-size · 10 MW

Price County 1 operating1

SOS Limited Park Falls Crypto Mine (Former Flambeau River Papers Mill)Small

St. Croix County 1 proposed1

Metered Mining Hammond Data CenterEdge · 6 MW

Walworth County 1 operating1

Bella Mia (HostDrive) Lake Geneva Data CenterSmall

Washington County 1 operating1

Ethoplex Data CenterSmall

Whitewater County 1 operating1

Central OfficeNetwork

Data centers in Wisconsin: common questions

How many data centers are in Wisconsin?: More Than Just Parks tracks 66 active data center facilities in Wisconsin, each citing a public source: 54 operating, 5 under construction and 7 proposed. 16 more were canceled, withdrawn, suspended or blocked.
Where are the data centers in Wisconsin?: Wisconsin's data centers are in 22 counties. The most are in Milwaukee County (17), Dane County (11) and Waukesha County (5). The busiest places are around Madison, Sturtevant and Janesville.
How much electricity do Wisconsin's data centers use?: We don’t publish a state total, and the reason matters: about seven in ten facilities here never disclose a capacity, so any sum would look like a census of Wisconsin's data center load while leaving out the sites that stayed quiet. Each facility page shows the figure its own source states. A single large campus can draw as much power as a small city.
Are Wisconsin data centers near protected land?: 3 of the tracked facilities in Wisconsin sit within 10 miles of protected public land, measured to the real boundary of the nearest national park, wilderness area, wildlife refuge or conservation area; none sit within a single mile.
Which county in Wisconsin has the most data centers?: Milwaukee County has the most, with 17 tracked data centers, followed by Dane County (11) and Waukesha County (5).
Are there proposed data centers in Wisconsin?: Yes. We track 7 proposed data centers in Wisconsin, including Adrian Township Data Center (Nodiac), Metered Mining Hammond Data Center and QTS Madison Data Center. One of them sits within 10 miles of protected public land.
Who is building data centers in Wisconsin?: The most active operators in Wisconsin are Microsoft (4 sites), Expedient (2 sites) and Data Holdings (2 sites), counted by sites, not megawatts.

Every facility on this page cites a public record we can link to: industry reporting, facility trackers, company announcements, and local planning and utility filings, cross-referenced against protected public land. Part of the Data Center Tracker from More Than Just Parks. A facility shows a capacity only where its own source states one.

Data centers in Wisconsin