Data Center Registry

Project Cardinal (TAC Data Centers Great Falls Campus)

Great Falls, Cascade County, Montana · All 2 TAC Data Centers sites

CancelledNo reception on recordRecord updated October 8, 2026

Project Cardinal (TAC Data Centers Great Falls Campus) is a cancelled data center in Great Falls, Montana (Cascade County), operated by TAC Data Centers (The Ardent Companies). The public record puts it at announced June 17, 2025, 600 MW planned, 569 acres.

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: TAC Data Centers (The Ardent Companies)
Facility type: Data center
Location: Great Falls, Cascade County, MT
Coordinates: 47.5049, -111.2919 (approximate)
Power capacity: 600 MW planned
Land: 569 acres
Investment: Not established from a public source
Announced: June 17, 2025
Utility: Not established from a public source
Cooling: Not established from a public source
Water use: Not established from a public source
Jobs: 150 permanent; 1,500 construction
Public subsidy: Not established from a public source
Community reception: No reception on record
Source confidence: Confirmed by multiple independent sources or official documentation

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.

November 18, 2025
Cancelled
TAC released its option to lease the 569 acres. NorthWestern Energy's power timelines did not fit the project. Source: The Electric (Great Falls)
June 17, 2025
Proposed
TAC Data Centers announced Project Cardinal, a hyperscale campus of about 2 million sq ft that would need up to 600 MW, on a 569-acre site just outside Great Falls' northeast boundary between Malmstrom AFB and the Missouri River. Source: Montana Free Press

Opposition and litigation at this site

Nothing on record as of October 8, 2026. No lawsuit, organized opposition, or contested hearing over Project Cardinal (TAC Data Centers Great Falls Campus) in Great Falls, Cascade County, Montana appears in the sources this registry tracks. That is an absence in our sources rather than a finding that none exists, and local opposition often predates any coverage a national dataset would pick up.

If you live near this site and something is happening that this page does not show, that is worth telling us. Send us the document and it goes in the record with the source attached. For sites where opposition is already established, see every contested site we track.

Notes on the record

The pin is the Great Falls city centroid, not the parcel. The site was 569 acres adjacent to AgriTech Park, north of Malmstrom Air Force Base, outside city limits. The reported investment was $1-1.5 billion. Job figures are the low ends of the reported ranges: 1,500-2,000 construction and 150-200 permanent.

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.

Cooling method and water use
Tax abatements or other public subsidy
How the community has received it
Which utility serves it

Which document closes each gap

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.
How the community has received it: Planning commission and governing body minutes, public comment records, and any petition or lawsuit filed in the county.
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.

North Data Center Great Falls · Great Falls · North Data Center, LLCunder 1 mile · Operating

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Questions people ask about this site

Is there opposition to the Project Cardinal (TAC Data Centers Great Falls Campus) in Great Falls?

Has anyone filed a lawsuit over the Project Cardinal (TAC Data Centers Great Falls Campus)?

No lawsuit over Project Cardinal (TAC Data Centers Great Falls Campus) appears in the record we track as of October 8, 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 Project Cardinal (TAC Data Centers Great Falls Campus) use?

No water withdrawal figure for Project Cardinal (TAC Data Centers Great Falls Campus) 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 Project Cardinal (TAC Data Centers Great Falls Campus), and how big is it?

TAC Data Centers (The Ardent Companies) is the operator on record. We hold 2 sites for that company across the registry. Capacity on record is 600 MW. The site is recorded at 569 acres.

How to cite this page

SueDataCenters.org Data Center Registry, "Project Cardinal (TAC Data Centers Great Falls Campus)," updated October 8, 2026, https://suedatacenters.org/data-centers/tac-project-cardinal-great-falls-mt.

Facility data from Compute Atlas (E. Kubiak), version 1.34.1 (October 4, 2026), licensed CC BY 4.0, record https://www.compute-atlas.com/facilities/tac-project-cardinal-great-falls-mt, retrieved October 9, 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.Proposed data center project off · The Electric (Great Falls) · retrieved October 8, 2026
2.For massive Great Falls data center proposal, energy supply is crucial to push project forward · Montana Free Press · retrieved October 8, 2026
3.Montana Data Center Projects (lists TAC Project Cardinal, Great Falls, 600 MW, canceled) · ServerCountry · retrieved October 8, 2026

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