Proposed sitesMap

Proposed-site record

Quantica LLC Big Sky Campus

High-priority Broadview / Yellowstone County proposal from Quantica's Big Sky Digital Infrastructure platform. Current sources support water, power, public-tax-impact, labor-agreement, and transparency leads; primary permits, PSC filings, agreements, and agency correspondence still need review.

ProposedconfirmedHigh concern

Site Snapshot

Location
Broadview, Yellowstone County, Montana
Operator / sponsor
Quantica / Big Sky Digital Infrastructure
Status / stage
Proposed · approval / land-use
Scale
1100 MW reported; Mega campus (>1,000 MW); 6,000,000 sq ft; about 5,100 acres; first building expected 2029
Reported project context; confirm whether any MW figure is requested, approved, energized, IT load, generation, or ultimate buildout before comparing it with another record.Capacity reading: Project-scale context · MW type not established · Proposed floor area · Site area · Target online date

Compute Workload

This panel tracks what the facility is for without assuming that every project is AI training, inference, or cloud capacity.

Undisclosed / unknownUnknown

Sources describe the campus scale, water, power, and development platform. Quantica's August 2026 release adds company guidance on projected campus water use of 20,000 gallons per day at completion and closed-loop cooling, while NorthWestern's July 2026 SEC-filed presentation records a development agreement and study-load range; DataCenterWatch has not attached a specific tenant or workload disclosure.

Quantica's projected water-use figures are development context, not workload evidence. NorthWestern's July 30, 2026 presentation records a 25 MW study load ramping to 1,100 MW under a development agreement; this is utility/project planning context, not workload capacity. No public workload allocation is attached despite large reported power/interconnection figures.

Sources reviewed; workload unresolved · Reviewed 2026-09-09Training/inference: unknown · class: unknownBig Sky Digital Infrastructure: Big Sky Digital FAQQuantica Infrastructure: Quantica Infrastructure introduces Big Sky Digital InfrastructureQuantica Infrastructure: What We Do — Quantica InfrastructureQuantica Infrastructure: Big Sky Digital Infrastructure Outlines Water Use PlansNorthWestern Energy (SEC filing): NorthWestern Energy Q2 2026 investor presentation: Montana large-load opportunities

Data Fields

Source leads point to attached records or reporting. They still need field-level review before being treated as verified evidence.

NDA / secrecySource lead attached
bigskyeconomicdevelopment.orgbigskydigitalinfra.comBig Sky Digital Infrastructure
Public moneySource lead attached
bigskyeconomicdevelopment.orgbigskydigitalinfra.comBig Sky Digital Infrastructure
WaterSource lead attached
KTVQQuantica Infrastructurebigskyeconomicdevelopment.org
PowerSource lead attached
Quantica Infrastructurebigskyeconomicdevelopment.orgbigskydigitalinfra.com

Public Money

Source reviewed September 9, 2026: Big Sky Digital's FAQ cites an economic analysis estimating about $33.2 million in annual property-tax payments for a 500 MW data center, including school, road, library, and other public-service allocations. Montana law defines qualified data-center property and its tax classification, but the reviewed state and county materials do not establish a Quantica-specific abatement, subsidy, public expenditure, or utility-cost transfer. The $33.2 million remains a developer-attributed tax-impact projection, not recorded revenue or spending.

Source links for this fieldbigskyeconomicdevelopment.orgQuantica Infrastructure Introduces Big Sky Digital Infrastructure As Its Flagship Development Platform In Montanabigskydigitalinfra.combigskydigitalinfra.com sourceBig Sky Digital InfrastructureBig Sky Digital FAQQuantica InfrastructureQuantica files interconnection applications for Big Sky campus

Water

Source reviewed September 9, 2026: Quantica's public news material estimates about 20,000 gallons per day once the Big Sky campus is completed and describes closed-loop cooling using the Deep Madison Group Aquifer. The developer does not publish a water right, permit, service agreement, measured withdrawal, wastewater capacity, or operating consumption; those remain unresolved.

Source links for this fieldKTVQQuantica outlines proposed water usage for Broadview data centerQuantica InfrastructureBig Sky Digital Infrastructure Outlines Water Use Plansbigskyeconomicdevelopment.orgQuantica Infrastructure Introduces Big Sky Digital Infrastructure As Its Flagship Development Platform In Montanabigskydigitalinfra.combigskydigitalinfra.com source

Power

Source reviewed September 9, 2026: NorthWestern Energy identifies Big Sky Digital Infrastructure as a Quantica platform developing a 5,000-acre Yellowstone County energy and technology hub. Quantica says it filed interconnection applications to expand generation for a 1,100 MW campus, while its FAQ describes reliance on NorthWestern transmission service and early discussions about power resources. The 1,100 MW remains planned project/power context, not confirmed approved, energized, generation, or data-center IT-load capacity.

Source links for this fieldQuantica InfrastructureQuantica files interconnection applications for Big Sky campusbigskyeconomicdevelopment.orgQuantica Infrastructure Introduces Big Sky Digital Infrastructure As Its Flagship Development Platform In Montanabigskydigitalinfra.combigskydigitalinfra.com sourceBig Sky Digital InfrastructureBig Sky Digital FAQ

Bloom / Fuel Cells

No fuel-cell or Bloom Energy source is attached to this project yet.

Core tracking fields have source leads attachedFields with source leads: NDA / secrecy, Public money, Water, Power
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Sources and Leads

These links are the current public trail for this record. Treat broad dataset links as leads; local documents and reporting carry more weight.

bigskyeconomicdevelopment.orgQuantica Infrastructure Introduces Big Sky Digital Infrastructure As Its Flagship Development Platform In Montanabigskydigitalinfra.combigskydigitalinfra.com sourceBig Sky Digital InfrastructureBig Sky Digital FAQQuantica InfrastructureQuantica files interconnection applications for Big Sky campusKTVQQuantica outlines proposed water usage for Broadview data centerMontana Free PressAgreement between data center developer and union federation thin on detailsData Center DynamicsEncap Backed Quantica Details Plans For 1gw Campus In MontanaNorthWestern EnergyMontana Data CentersQuantica InfrastructureBig Sky Digital Infrastructure Outlines Water Use PlansMontana LegislatureMontana Code Annotated 15-6-162: Class seventeen propertyFracTracker AllianceOpen U.S. Data Centers TrackerArcGIS source rowQuantica LLC Big Sky Campus dataset attributes