DC
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STACK Infrastructure NVA02

Operating + expandingAI campusCampusManassas, Prince William County, Virginia
60% profile completeness
37 claims from 12 sources
Current facility power
118 MW[1]
Likelyestimated
Planned capacity
487 MW[1]
Likelyestimated
Floor area
Not yet sourced
Buildings (planned)
6[1]
Likelyderived
Capital cost / investment
$3.2B[1]
Likelyestimated
First operational
Oct 1, 2024[1]
Likelyderived

POWER & GRID

Time-to-power · verification · interconnection
Time to power
Remaining capacity: H2 2027 – H2 2028
Medium confidencewindow, not a prediction
Project verification
Verified operating
Operation documented by satellite imagery.
Current stage
Operational
Furthest stage with documented evidence
Utility · ISO
Dominion Energy · PJM
Substation: On-site substation

Power reality

Announced
487 MW[1]
Research estimate of planned capacity (no company figure found)
Interconnection request
No record
Contracted / approved
No record
Under construction
369 MW[1]
Buildings 2–6 under construction (satellite-tracked phases)
Operational
118 MW[1]
Estimated from buildings observed operational
  • ⚠ No public interconnection record for this load — PJM does not publish large-load requests.
  • ⚠ No permit record linked to this site yet.
AI evidence brief
Summarizes only the evidence on this page. Answers citing anything else are rejected automatically.
How the time-to-power window was estimated
Evidence used
  • Current stage: Operational (furthest stage with documented evidence)[1]
  • Stated date: Next projected milestone: 2028-01-01 (modeled/speculative)[1]
  • Required: 487 MW
Assumptions
  • From “Under construction”, large loads have typically taken 0.5–2 more years to first power (editorial range; see Methodology).
  • The window is a range of plausible outcomes under these assumptions, not a forecast. It moves as new filings, queue updates or imagery arrive.
Window: H2 2027 – H2 2028

Project verification

Development
  1. Announcedimplied by a later stage
  2. Land acquiredMay 6, 2025
    Government record
    • May 6, 2025 · Land acquisition / deed recorded[9]
    • May 6, 2025 · Deed recorded for parcel 7595-65-9789.00.[9]
    • May 6, 2025 · Deed recorded for parcel 7595-75-3611.[9]
    • May 6, 2025 · Deed recorded for parcel 7595-76-2590.[9]
    • May 6, 2025 · Deed recorded for parcel 7595-54-7478.[9]
  3. Planning / zoningimplied by a later stage
  4. Permittingimplied by a later stage
Grid interconnection
  1. Interconnection application
  2. Feasibility study
  3. System impact study
  4. Facilities study
  5. Interconnection agreement / service contract
Build & energization
  1. Financing
  2. Under constructionOct 19, 2019
    Model estimate · Satellite imagery
    • Oct 19, 2019 · Reported status: under construction[1]
    • Oct 19, 2019 · Construction start[1]
    • Oct 19, 2019 · Land clearing begins by Peterson Companies for Stack Infrastructure, which is noted in the [news](https://www.bisnow.com/washington-dc/news/data-center/peterson-cos-partnering-to-b[1]
    • Oct 1, 2024 · Reported status: expanding[1]
  3. EnergizationOct 1, 2024
    Satellite imagery
    • Oct 1, 2024 · Building 1 is operational, which is assumed to be three months after the last backup diesel generators are finished. The generators were first seen to be finished July 1 from satel[1]
  4. OperationalOct 1, 2024
    Satellite imagery
    • Oct 1, 2024 · Building 1 is operational, which is assumed to be three months after the last backup diesel generators are finished. The generators were first seen to be finished July 1 from satel[1]

● documented · ◌ implied by a later stage · ○ no evidence found. Dates are those of the earliest dated evidence, which can be later than when a stage actually began. Evidence classes: Government record, Model estimate, Satellite imagery.

Grid path

  1. facility
    STACK Infrastructure NVA02
  2. substation
    On-site substation[1]
    Satellite imageryLikely
    1 substation outline traced inside the campus on satellite imagery
  3. transmission
    Not identified
    UnknownUnverified
    No transmission line mapped within 2 km.
  4. utility
    Dominion Energy[2]
    Service territoryLikely
    Retail service territory containing the site
  5. ISO / RTO
    PJM[4]
    Service territoryLikely
    Balancing authority: PJM
Substation capacity:
not published
Required upgrades:
not yet sourced
Congestion:
not yet sourced (no nodal price data)

Dashed boxes are based on proximity only and do not establish which asset serves the site.

Interconnection records

No interconnection-queue record is linked to this site. Of the ISOs we ingest, only NYISO publishes large-load requests; PJM, ERCOT, MISO, SPP and CAISO queues list generation only.

On-site & dedicated generation

No on-site, behind-the-meter or dedicated generation found in sources.

Location & imagery

Mapped outline
Coordinates
38.74436, -77.54020
Address
9590 Hornbaker Rd, Manassas, VA 20109[1]Likely
County
Prince William County
Photographs

No openly licensed ground-level photos matched to this site yet.

Ownership, operation & customers

  1. 1. Property owner of record
    Not identified
  2. 2. Owner / developer
    Not identified
  3. 3. Operator
    Not identified
  4. 4. Tenant / cloud
    Not identified
  5. 5. End customer / workload
    Not identified
Power supply
Utility:
Dominion Energy[2]Likely

Each link is sourced separately. The property owner of record is often a special-purpose entity; the same company appearing in two roles is shown only when sources say so.

All parties with evidence
Utility
Dominion Energy[2]Likely

Location falls inside this utility's retail service territory.

No tenants or end users identified in our sources yet.

Power (all fields)

Current facility power
118 MW[1]Likelyestimated

Estimated total facility power (IT plus cooling and overhead) at the latest observed milestone.

Current IT capacity
85 MW[1]Likelyestimated

Estimated IT load currently online, based on buildings observed operational.

Planned capacity
487 MW[1]Likelyestimated

Projected facility power at the last tracked milestone (2028-01-01); not necessarily full build-out.

Estimated annual consumption
724 GWh/yr[3]Speculativeestimated

118 MW × 8,760 h × 70% utilization.

Capacity figures are nameplate or contracted; annual consumption is a labeled model estimate, not metered data.

Grid & electricity

ISO / RTO
PJM[4]Likelyderived

Location falls inside this ISO/RTO footprint.

Balancing authority
PJM[2]Likelyderived

Control area of the containing utility territory.

Nearest mapped substation
Hourglass Substation (230 kV)[5]Likelyderived

Nearest substation mapped in OpenStreetMap; proximity does not establish which substation serves the site.

Distance to substation
2.1 km[5]Likelyderived
State avg. industrial price
10.07¢/kWh[7]Confirmed

Virginia statewide average, July 2026.

State avg. commercial price
11.68¢/kWh[7]Confirmed

Virginia statewide average, July 2026.

Generation within 50 km
2.83 GW[8]Confirmedderived

35 EIA-reported plants within 50 km.

Generation queued in county
1.35 GW[6]Confirmedderived

16 active generation interconnection requests in Prince William County: Storage 1,350 MW. Queued projects often don't get built.

Interconnection status
Not yet sourced
Contracted / committed power
Not yet sourced
Nearby infrastructureTypeDistanceVoltage / capacitySource
Covanta Fairfax Energy · Covanta Fairfax IncPower plant (Biomass)26.5 km98 MW[8]
Remington · Virginia Electric & Power CoPower plant (Natural Gas)30 km604 MW[8]
Marsh Run Generation Facility · Old Dominion Electric CoopPower plant (Natural Gas)31.1 km481 MW[8]
Possum Point · Virginia Electric & Power CoPower plant (Natural Gas)32.3 km645 MW[8]
Potomac Energy Center, LLC · Potomac Energy Center LLCPower plant (Natural Gas)34.9 km766 MW[8]
Covanta Alexandria/Arlington Energy · Covanta Alexandria/ArlingtonPower plant (Biomass)36.2 km29 MW[8]
Ripley · MN8 Energy LLCPower plant (Solar)45 km28 MW[8]
Nih Cogeneration Facility · National Institutes of HealthPower plant (Natural Gas)48 km28 MW[8]
Hourglass SubstationSubstation2.12 km230 kV[5]
Sandlot Substation · Dominion EnergySubstation2.62 km230 kV[5]
Innovation SubstationSubstation2.65 km230 kV[5]
Wellington Delivery PointSubstation2.68 km115 kV[5]
Dominion Delivery Point · Dominion EnergySubstation2.68 km115 kV[5]
City of Manassas - (VA) substation · City of Manassas - (VA)Substation2.71 km13.2 kV[5]
Largest queued generation in this countyFuelQueue statusMWSource
Gainesville-Loudoun 230 kVPJM AI2-231StorageIn study · proposed 2023-10200 MW[6]
Nokesville-Vint Hill 230 kVPJM AG2-113StorageIn study · proposed 2022-08150 MW[6]
Catharpin 230 kVPJM AG2-284StorageIn study · proposed 2023-12150 MW[6]
Liberty 230 kVPJM AG2-304StorageIn study · proposed 2023-12150 MW[6]
Possum Point 230 kVPJM AG2-306StorageIn study · proposed 2023-12150 MW[6]
Possum Point 230kVPJM AH2-034StorageIn study · proposed 2028-12100 MW[6]

Utility, ISO and nearby assets are derived from the site's location. Proximity to a substation or line doesn't establish the interconnection; that needs a utility filing or interconnection-queue record. Queue requests are applications, not commitments — most never reach operation.

Construction & permitting

  1. Announced
    —
  2. Land acquired
    May 6, 2025[9]
  3. Permitting
    —
  4. Construction start
    Oct 19, 2019[1]
  5. First operational
    Oct 1, 2024[1]
  6. Expected completion
    Jan 1, 2028[1]
    Projected
Planned capacity
487 MW[1]Likelyestimated

Projected facility power at the last tracked milestone (2028-01-01); not necessarily full build-out.

Buildings (planned)
6[1]Likelyderived

Count of building outlines traced on satellite imagery.

Buildings operational
1[1]Likelyestimated
PhaseStatusAdded MWCompleted / expectedSource
Building 1operational118 MWOct 1, 2024[1]
Buildings 2–6under construction369 MWJan 1, 2028 (projected)[1]

Real estate

Official assessments
Assessor's value for a tax year

None sourced yet

Recorded transactions
Sale prices from recorded deeds

None sourced yet

Model estimates
Our model — not an appraisal

None sourced yet

ParcelRecord ownerAcresZoning / useBuilding sq ftSource
7595-65-9789.00
Prince William County, VA
—14.22——[9]
7595-75-3611
Prince William County, VA
—16.44——[9]
7595-76-2590
Prince William County, VA
—20.77——[9]
7595-54-7478
Prince William County, VA
—49.76——[9]
Site area
101.2 acres[9]Confirmed

Sum of county land area across parcels.

Capital cost / investment
$3.2B[1]Likelyestimated

Modeled total capital cost (2025 USD) of capacity currently operational, incl. compute hardware.

Annual property tax
Not yet sourced

Size

Parcel / land records
7595-65-9789.00 (Prince William County),7595-75-3611 (Prince William County),7595-76-2590 (Prince William County),7595-54-7478 (Prince William County)[9]Confirmed
Floor area
Not yet sourced

Compute

Chip types
H100[1]Confirmed
Compute (H100-equivalents)
61,100[1]Likelyestimated

What changed (last 3 years)

Follow this facility (RSS)
  • Buildings operational
    0Oct 19, 2019[1]→1Oct 1, 2024[1]
  • Status
    Under constructionOct 19, 2019[1]→Operating + expandingOct 1, 2024[1]

Timeline

Construction start: Oct 19, 2019[1]
First operational: Oct 1, 2024[1]
  1. Oct 19, 2019[1]

    Land clearing begins by Peterson Companies for Stack Infrastructure, which is noted in the news and visible on satellite imagery.

  2. Oct 1, 2024118 MW facility power· 1 buildings operational[1]

    Building 1 is operational, which is assumed to be three months after the last backup diesel generators are finished. The generators were first seen to be finished July 1 from satellite imagery (a clear image of this can be seen on July 29 via Google Earth).

  3. Feb 14, 2026118 MW facility power· 1 buildings operational[1]

    All buildings have begun construction (with groundwork starting for AI building 6), as depicted by satellite imagery.

  4. Jan 1, 2028Projected487 MW facility power· 6 buildings operational[1]

    Estimate: All 6 AI data center buildings will be finished in 2028, assuming a groundbreak-to-operational timeline of 18-24 months. One is complete, three are clearly under construction, and the last two data centers are still breaking ground and laying foundations.

  5. May 6, 2025[9]

    Deed recorded for parcel 7595-65-9789.00.

  6. May 6, 2025[9]

    Deed recorded for parcel 7595-75-3611.

  7. May 6, 2025[9]

    Deed recorded for parcel 7595-76-2590.

  8. May 6, 2025[9]

    Deed recorded for parcel 7595-54-7478.

Buildings on this campus

1
  • COPT DC-6Operating · 128,100 sq ft footprint

All claims (provenance audit)

37
FieldValueSourceConfidenceAs ofStatus
NameSTACK Infrastructure NVA02[1] Likely2026-02-14Shown
StatusUnder construction[1] derivedLikely2019-10-19Superseded / alternative
StatusOperating + expanding[1] derivedLikely2024-10-01Superseded / alternative
StatusOperating + expanding[1] derivedLikely2026-02-14Shown
Facility typeAI campus[1] derivedLikely2026-02-14Shown
Address9590 Hornbaker Rd, Manassas, VA 20109[1] Likely2026-02-14Shown
UtilityDominion Energyterritory 19876: VIRGINIA ELECTRIC & POWER CO (INVESTOR OWNED, DOMINION RESOURCE[2] derivedLikely2022Shown
Current facility power118 MW[1] estimatedLikely2026-02-14Shown
Current facility power118 MW[1] estimatedLikely2024-10-01Superseded / alternative
Current IT capacity85 MW[1] estimatedLikely2026-02-14Shown
Current IT capacity85 MW[1] estimatedLikely2024-10-01Superseded / alternative
Planned capacity487 MW[1] estimatedLikely2026-02-14Shown
Estimated annual consumption724 GWh/yr[3] estimatedSpeculative2026-09-29Shown
ISO / RTOPJMPJM INTERCONNECTION, LLC[4] derivedLikely—Shown
Balancing authorityPJM[2] derivedLikely—Shown
Nearest mapped substationHourglass Substation (230 kV)way/1189694187[5] derivedLikely2026-09-28Shown
Distance to substation2.1 km[5] derivedLikely2026-09-28Shown
Generation queued in county1.35 GW[6] derivedConfirmed2026-09-27Shown
State avg. industrial price10.07¢/kWh[7] Confirmed2026-07Shown
State avg. commercial price11.68¢/kWh[7] Confirmed2026-07Shown
Generation within 50 km2.83 GW[8] derivedConfirmed202502Shown
Buildings (planned)6[1] derivedLikely2026-02-14Shown
Buildings operational1[1] estimatedLikely2026-02-14Shown
Buildings operational0[1] estimatedLikely2019-10-19Superseded / alternative
Buildings operational1[1] estimatedLikely2024-10-01Superseded / alternative
Site area101.2 acres[9] Confirmed2026-09-27Shown
Capital cost / investment$3.2B[1] estimatedLikely2026-02-14Shown
Parcel / land records7595-65-9789.00 (Prince William County)[9] Confirmed2026-09-27Shown
Parcel / land records7595-75-3611 (Prince William County)[9] Confirmed2026-09-27Shown
Parcel / land records7595-76-2590 (Prince William County)[9] Confirmed2026-09-27Shown
Parcel / land records7595-54-7478 (Prince William County)[9] Confirmed2026-09-27Shown
Compute (H100-equivalents)61,100[1] estimatedLikely2026-02-14Shown
Chip typesH100[1] Confirmed2026-02-14Shown
Land acquiredMay 6, 2025[9] derivedConfirmed2026-09-27Shown
Construction startOct 19, 2019[1] derivedLikely2026-02-14Shown
First operationalOct 1, 2024[1] derivedLikely2026-02-14Shown
Expected completionJan 1, 2028[1] estimatedSpeculative2026-02-14Shown