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Digital Realty ACC9

OperatingColocationBuildingAshburn, Loudoun County, Virginia

Part of Digital Realty — Ashburn, VA campus

70% profile completeness
29 claims from 8 sources
Current facility power
45 MW[1]
Likely
Planned capacity
Not yet sourced
Floor area
362,100 sq ft[2]
Confirmed
Buildings (planned)
Not yet sourced
Capital cost / investment
Not yet sourced
First operational
2017[1]
Likely

POWER & GRID

Time-to-power · verification · interconnection
Time to power
Energized — operating
High confidence
Project verification
Verified operating
Operation documented by permit / site plan.
Current stage
Operational
Furthest stage with documented evidence
Utility · ISO
Dominion Energy · PJM
Substation: Farmwell Substation (230 kV) (nearest, unverified)

Power reality

Announced
No record
Interconnection request
No record
Contracted / approved
No record
Under construction
No record
Operational
45 MW[1]
Reported
AI evidence brief
Summarizes only the evidence on this page. Answers citing anything else are rejected automatically.

Project verification

Development
  1. Announcedimplied by a later stage
  2. Land acquiredimplied by a later stage
  3. Planning / zoningimplied by a later stage
  4. PermittingSep 27, 2026
    Permit / site plan
    • Sep 27, 2026 · Permit / case B60283300100[2]
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 constructionimplied by a later stage
  3. EnergizationSep 27, 2026
    Community map
    • Sep 27, 2026 · Power in use reported: 29 MW[1]
    • Sep 27, 2026 · Power in use reported: 45 MW[1]
  4. OperationalSep 27, 2026
    Community map · Permit / site plan
    • Sep 27, 2026 · Reported status: operating[1]
    • Sep 27, 2026 · Reported status: operating[2]

● 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: Permit / site plan, Community map.

Grid path

  1. facility
    Digital Realty ACC9
  2. substation
    Farmwell Substation (230 kV)[1]
    Proximity onlyUnverified
    Nearest mapped substation, 0.14 km away. Proximity does not establish that it serves the site.
  3. transmission
    2149;2190 (230 kV)[1]
    Proximity onlyUnverified
    Highest-voltage line mapped within 2 km (0.14 km away). Not confirmed as the supply path.
  4. utility
    Dominion Energy[3]
    Service territoryLikely
    Retail service territory containing the site
  5. ISO / RTO
    PJM[5]
    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
39.01546, -77.46706
Address
21745 Sir Timothy Drive, Ashburn, VA 20147[1]Likely
County
Loudoun County
Photographs

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

Ownership, operation & customers

  1. 1. Property owner of record
    Blue Sling Acc 9 LLC(unreviewed)[2]
  2. 2. Owner / developer
    Digital Realty[1]Likely
  3. 3. Operator
    Digital Realty[1]Likely
  4. 4. Tenant / cloud
    Not identified
  5. 5. End customer / workload
    Not identified
Power supply
Utility:
Dominion Energy[3]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
Property owner of record
Owner
Operator
Utility
Dominion Energy[3]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
45 MW[1]Likely
Current IT capacity
29 MW[1]Likely
Estimated annual consumption
276 GWh/yr[4]Speculativeestimated

45 MW × 8,760 h × 70% utilization.

Planned capacity
Not yet sourced

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

Grid & electricity

ISO / RTO
PJM[5]Likelyderived

Location falls inside this ISO/RTO footprint.

Balancing authority
PJM[3]Likelyderived

Control area of the containing utility territory.

Nearest mapped substation
Farmwell Substation (230 kV)[1]Likelyderived

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

Distance to substation
0.1 km[1]Likelyderived
Highest-voltage line nearby
230 kV[1]Likelyderived

Highest-voltage transmission line mapped within 2 km.

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
1.64 GW[8]Confirmedderived

60 EIA-reported plants within 50 km.

Generation queued in county
1.04 GW[6]Confirmedderived

11 active generation interconnection requests in Loudoun County: Storage 940 MW, Solar 100 MW. Queued projects often don't get built.

Interconnection status
Not yet sourced
Contracted / committed power
Not yet sourced
Nearby infrastructureTypeDistanceVoltage / capacitySource
2149;2190 · Virginia Electric & Power CompanyTransmission line0.14 km230 kV[1]
2149;2166 · Virginia Electric & Power CompanyTransmission line0.19 km230 kV[1]
230 kV lineTransmission line0.38 km230 kV[1]
2190 · Virginia Electric & Power CompanyTransmission line0.5 km230 kV[1]
2149 · Virginia Electric & Power CompanyTransmission line0.5 km230 kV[1]
2203 · Virginia Electric & Power CompanyTransmission line0.57 km230 kV[1]
Potomac Energy Center, LLC · Potomac Energy Center LLCPower plant (Natural Gas)8.2 km766 MW[8]
Montgomery County Resource Recovery · Covanta Montgomery, Inc.Power plant (Biomass)20.6 km54 MW[8]
Dickerson Power · Dickerson Power, LLCPower plant (Natural Gas)21.6 km299 MW[8]
Nih Cogeneration Facility · National Institutes of HealthPower plant (Natural Gas)32.3 km28 MW[8]
Covanta Alexandria/Arlington Energy · Covanta Alexandria/ArlingtonPower plant (Biomass)37.7 km29 MW[8]
Covanta Fairfax Energy · Covanta Fairfax IncPower plant (Biomass)40.7 km98 MW[8]
Blake Solar Plant · Horus West Virginia 1, LLCPower plant (Solar)41.9 km80 MW[8]
Central Utility Plant At White Oak · GSA Metropolitan Service CenterPower plant (Natural Gas)41.9 km54 MW[8]
Farmwell Substation · Virginia Electric & Power CompanySubstation0.14 km230 kV[1]
Unnamed substationSubstation0.44 km34.5 kV[1]
Nimbus SubstationSubstation0.44 km230 kV[1]
Cumulus SubstationSubstation0.58 km230 kV[1]
NIVO Substation · Dominion EnergySubstation1.05 km230 kV[1]
Roundtable Substation · Virginia Electric & Power CompanySubstation1.14 km230 kV[1]
Largest queued generation in this countyFuelQueue statusMWSource
Loudoun 230 kVPJM AG2-285StorageIn study · proposed 2023-12150 MW[6]
Beaumeade 230 kVPJM AG2-287StorageIn study · proposed 2023-12150 MW[6]
New Road StoragePJM AE2-019StorageIA signed · proposed 2026-12120 MW[6]
Dulles SolarPJM AF1-147SolarIA signed · proposed 2023-12100 MW[6]
Roundtable 230 kVPJM AG2-307StorageIn study · proposed 2023-12100 MW[6]
Shelhorn 230 kVPJM AG2-323StorageIn study · proposed 2023-12100 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
    —
  3. Permitting
    —
  4. Construction start
    —
  5. First operational
    2017[1]
  6. Expected completion
    —
Permit / case numbers
B60283300100[2]Confirmed

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
061361948000
Loudoun County, VA
BLUE SLING ACC 9 LLC
Project: Dupont Fabros 1
18.82OP (ZMAP-1998-0003) · Data Center362,108
built
[2]
Site area
18.8 acres[2]Confirmed

Legal acreage of the parcel(s).

Zoning
OP[2]Confirmed
Land use
Data Center[2]Confirmed
Annual property tax
Not yet sourced

Size

Floor area
362,100 sq ft[2]Confirmed

Building area on the county's data-center parcel inventory (from building permits).

Building footprint
329,700 sq ft[1]Likelyderived

Computed from the mapped OSM building outline.

Parcel / land records
MCPI 061361948000 (Loudoun County)[2]Confirmed

What changed (last 3 years)

Follow this facility (RSS)

No tracked changes yet. Values are recorded on every data refresh, so changes will appear here over time.

Timeline

First operational: 2017[1]

    Other buildings on this campus

    21

    All claims (provenance audit)

    29
    FieldValueSourceConfidenceAs ofStatus
    NameDigital Realty ACC9way/649365764 name=Digital Realty ACC9[1] Likely2026-09-27Shown
    StatusOperating[1] derivedUnverified2026-09-27Shown
    StatusOperating[2] derivedConfirmed2026-09-27Shown
    Facility typeColocation[1] derivedUnverified2026-09-27Shown
    Address21745 Sir Timothy Drive, Ashburn, VA 20147[1] Likely2026-09-27Shown
    Property owner of recordBlue Sling Acc 9 LLCMCPI 061361948000: BLUE SLING ACC 9 LLC[2] Confirmed2026-09-27Shown
    OwnerDigital Realtyowner=Digital Realty[1] Likely2026-09-27Shown
    OperatorDigital Realtyoperator=Digital Realty[1] Likely2026-09-27Shown
    UtilityDominion Energyterritory 19876: VIRGINIA ELECTRIC & POWER CO (INVESTOR OWNED, DOMINION RESOURCE[3] derivedLikely2022Shown
    Current facility power45 MWinput:electricity=45 MW[1] Likely2026-09-27Shown
    Current IT capacity29 MWit_power=29 MW[1] Likely2026-09-27Shown
    Estimated annual consumption276 GWh/yr[4] estimatedSpeculative2026-09-29Shown
    ISO / RTOPJMPJM INTERCONNECTION, LLC[5] derivedLikely—Shown
    Balancing authorityPJM[3] derivedLikely—Shown
    Nearest mapped substationFarmwell Substation (230 kV)way/817632576[1] derivedLikely2026-09-28Shown
    Distance to substation0.1 km[1] derivedLikely2026-09-28Shown
    Highest-voltage line nearby230 kV[1] derivedLikely2026-09-28Shown
    Generation queued in county1.04 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 km1.64 GW[8] derivedConfirmed202502Shown
    Permit / case numbersB60283300100[2] Confirmed2026-09-27Shown
    Floor area362,100 sq ft[2] Confirmed2026-09-27Shown
    Building footprint329,700 sq ft[1] derivedLikely2026-09-27Shown
    Site area18.8 acres[2] Confirmed2026-09-27Shown
    Parcel / land recordsMCPI 061361948000 (Loudoun County)[2] Confirmed2026-09-27Shown
    ZoningOP[2] Confirmed2026-09-27Shown
    Land useData Center[2] Confirmed2026-09-27Shown
    First operational2017start_date=2017[1] Likely2026-09-27Shown