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Data centers in Yellowstone County, Montana: 1 project mapped
Yellowstone County holds Montana's largest data center proposal. Quantica Infrastructure's Big Sky Campus covers about 5,000 acres outside Broadview, a town of about 150 people 30 miles north of Billings. It is planned at 500 megawatts of power, expandable to 1,000, with construction on access roads and a well starting in September 2026; Quantica has no end user yet.
Water is the question residents ask most. Quantica says it will draw from the deep Madison Aquifer, 1,300 feet below the shallower Eagle Aquifer that Broadview homes use, at up to 150,000 gallons a day during construction and 20,000 a day once running. Retired Montana Tech hydrologist Jon Reiten said a properly cased well should not affect the shallower wells, but that the Madison water is hot and salty and would likely need treatment that leaves a costly, concentrated discharge to handle.
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Opponents have tried every local lever and lost each time. Broadview mother Kassi Solberg collected more than 12,000 of the 16,650 signatures needed for a ballot initiative requiring two-thirds voter approval for any data center, but the county reversed its earlier approval of the ballot language and sued her, saying a 2025 change in state election law had moved the signature deadline up a month; a district judge upheld the county's invalidation of the initiative in August.
In September, residents asked commissioners for Missoula-style interim zoning while new rules are written. County Attorney Scott Twito said Montana's 2025 Right to Compute Act sets a bar the county likely cannot meet: "I don't think the law is going to allow us to do what a lot of these folks want us to do." No vote on interim zoning has been scheduled.
Data center projects on record in Yellowstone County
Grouped by the town each site sits in. The report above may name projects that have no record here yet.
Broadview1
| Project | Company | Status | Power | |
|---|---|---|---|---|
| Quantica LLC Big Sky CampusBroadview | Quantica Infrastructure | Under construction | 1,000 MW |
Where this comes from
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Every project above is drawn from public records, filings and local reporting. Each row links to what it is based on. Statuses change, so check the source date before you rely on one. Found something wrong? Write to [email protected] and it gets fixed.