# Digital Realty ACC4

PJM data center · https://askthegrid.com/assets/facilities/digital-realty-acc4

Digital Realty ACC4 is an operating facility at 44480 Hastings Drive in the Ashburn Corporate Center campus. Public operator material identifies the site as ACC4; historical sources also use the DuPont Fabros ACC4 name. The facility is described as LEED Gold-certified with high-density white space and diverse network entries. The profile keeps that facility identity separate from campus-wide capacity and grid claims, and maps the exact location to the PJM-serving utility territory.

## Identity and location

- Operating status: operating
- Asset scope: facility
- Location: 44480 Hastings Drive, Ashburn, Loudoun County, VA
- Operator: Digital Realty (exact asset) — https://www.digitalrealty.com
- Owner: Grizzly Ventures LLC (exact asset)
- Developer: DuPont Fabros (original developer; later merged with Digital Realty) (exact asset) — https://www.dupontfabros.com

## Power and grid context

- Critical it load: 36.4 MW · operating · exact asset — critical power capacity
- Leasable it load: 36 MW · operating · exact asset — flexible capacity
- ISO/RTO: PJM
- Balancing authority: PJM
- Electric utility: Dominion Virginia Power

## Development

- Site status: operating
- Site area: 17 acres
- Gross floor area: 347,500 square feet
- Buildings: 1
- Construction: Single-building, operating Digital Realty facility (ACC4) at 44480 Hastings Drive; LEED Gold–certified, listed as one 1‑story data center building on a ~17‑acre Ashburn Corporate Center campus. Operator: Digital Realty; owner recorded as Grizzly Ventures LLC. Commonly reported gross building size ~347,500 ft² and advertised access to roughly 36 MW of critical IT power; some market listings describe multiple ~10,000 ft² data halls within the building. Commissioning / operational date reported in market records as 2007. Status: operating.

## Compute and operations

- Facility classes: colocation
- Operating context: ACC4 is a colocation data center operated by Digital Realty, providing high‑density white‑space capability and multiple diverse fiber/network entries.

## Sources

- [http://baxtel.com/data-center/44480-hastings-acc4-digital-realty](http://baxtel.com/data-center/44480-hastings-acc4-digital-realty)
- [http://datacenterhawk.com/marketplace/providers/digital-realty/44480-hastings-drive/acc-4](http://datacenterhawk.com/marketplace/providers/digital-realty/44480-hastings-drive/acc-4)
- [http://datacenterknowledge.com/business/32-generators-at-new-dupont-fabros-facility](http://datacenterknowledge.com/business/32-generators-at-new-dupont-fabros-facility)
- [44480 Hastings Drive in Ashburn | Digital Realty (36.4 MW)](http://datacentermap.com/usa/virginia/ashburn/44480-hastings-drive)
- [http://digitalrealty.com/about/newsroom/press-releases/122772/digital-realty-to-merge-with-dupont-fabros](http://digitalrealty.com/about/newsroom/press-releases/122772/digital-realty-to-merge-with-dupont-fabros)
- [ACC4 Data Center | 44480 Hastings Drive | Digital Realty](http://digitalrealty.com/data-centers/americas/northern-virginia/acc4)
- [http://emergencyprocedures.pjm.com/ep/pages/regions.jsf](http://emergencyprocedures.pjm.com/ep/pages/regions.jsf)
- [http://go2.digitalrealty.com/rs/087-YZJ-646/images/DS_Digital_Realty_2311_ACC4_Property_Factsheet_EN.pdf](http://go2.digitalrealty.com/rs/087-YZJ-646/images/DS_Digital_Realty_2311_ACC4_Property_Factsheet_EN.pdf)
- [http://go2.digitalrealty.com/rs/087-YZJ-646/images/DS_Digital_Realty_2311_ACC6_Property_Factsheet_EN.pdf](http://go2.digitalrealty.com/rs/087-YZJ-646/images/DS_Digital_Realty_2311_ACC6_Property_Factsheet_EN.pdf)
- [http://godatacenters.com/data-centers/virginia/ashburn/44480-hastings-drive-acc4-18b412b4](http://godatacenters.com/data-centers/virginia/ashburn/44480-hastings-drive-acc4-18b412b4)
- [http://i-sa.com/properties-general/44480-hastings-drive](http://i-sa.com/properties-general/44480-hastings-drive)
- [http://inflect.com/building/44480-hastings-drive-ashburn/digital-realty/datacenter/digital-realty-44480-hastings-drive](http://inflect.com/building/44480-hastings-drive-ashburn/digital-realty/datacenter/digital-realty-44480-hastings-drive)
- [Digital Realty Ashburn ACC4: data center in Loudoun, VA | Data Center Tracker](http://morethanjustparks.com/data-center-tracker/digital-realty-ashburn-acc4-va--6fc6196a-60b4-47e3-a868-eea4fafd2cc5) — More Than Just Parks
- [http://ocolo.io/colocation/digital-realty/northern-virginia-acc4](http://ocolo.io/colocation/digital-realty/northern-virginia-acc4)
- [http://openstreetmap.org/way/460060341](http://openstreetmap.org/way/460060341)
- [http://peeringdb.com/fac/408](http://peeringdb.com/fac/408)
- [http://reparcelasmt.loudoun.gov/pt/datalets/datalet.aspx?LMparent=20&UseSearch=no&jur=107&mode=profileall&pin=060178810000&taxyr=2026](http://reparcelasmt.loudoun.gov/pt/datalets/datalet.aspx?LMparent=20&UseSearch=no&jur=107&mode=profileall&pin=060178810000&taxyr=2026)
- [44480 Hastings (ACC4) Digital Realty Data Center](https://baxtel.com/data-center/44480-hastings-acc4-digital-realty)
- [Petition · Stop Building Data Centers in Loudoun County, Virginia - United States · Change.org](https://change.org/p/stop-building-data-centers-in-loudoun-county-virginia)
- [Petition · Stop the data center development in Ashburn Village - Ashburn, United States · Change.org](https://change.org/p/stop-the-data-center-development-in-ashburn-village)
- [Digital Realty 44480 Hastings Drive — Data Center](https://dchub.cloud/facilities/digital-realty-44480-hastings-drive-88126cb1)
- [Report Highlights Community Pushback Stalling $64 Billion in Data Center Development Nationwide - Inside Climate News](https://insideclimatenews.org/news/19052025/virginia-data-center-development-community-pushback/)
- [The Dark Side of Data Centers – Loudoun Climate Project](https://loudounclimate.org/data-centers/)
- [Digital Realty ACC4 Data Center, Ashburn, VA, USA](https://marketplace.upstack.com/data-centers/digital-realty-dft-data-center-ashburn-acc4)
- [Digital Realty Ashburn ACC4 - US Data Center Map 2026](https://usdatamap.com/facility/digital-realty-ashburn-acc4-va-dlr-1-a)
- [eBay Pays $79K Fine for Generator Snafu](https://www.datacenterknowledge.com/investing/ebay-pays-79k-fine-for-generator-snafu)
- [Digital Realty Data Center in Ashburn VA](https://www.datacenters.com/digital-realty-northern-virginia-acc4)
- [Issued Air Permits for Data Centers | Virginia DEQ](https://www.deq.virginia.gov/news-info/shortcuts/permits/air/issued-air-permits-for-data-centers)
- [Northern Virginia ACC4 - 44480 Hastings Drive](https://www.digitalrealty.com/data-centers/americas/northern-virginia/acc4)
- [In Virginia, the world's data center capital faces mounting opposition from local residents](https://www.lemonde.fr/en/economy/article/2026/05/10/in-virginia-the-world-s-data-center-capital-faces-mounting-opposition-from-local-residents_6753298_19.html)
- [DuPont Fabros Technology, Inc. Spearheads Water ...](https://www.prnewswire.com/news-releases/dupont-fabros-technology-inc-spearheads-water-conservation-among-its-loudoun-county-data-centers-through-its-reclaimed-water-sourcing-initiative-244068931.html)

## Data quality

- Evidence is limited to publicly available news, petitions, and operator statements; no direct utility or regulator reports were found.
- Power values retain their reported, requested, contracted, energized, gross-campus, or critical-IT basis.

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Canonical page: https://askthegrid.com/assets/facilities/digital-realty-acc4
Profile generated: 2026-09-04T13:46:27.532767Z
Source: Ask the Grid — https://askthegrid.com/