Can Northern Virginia Keep Powering the AI Boom?

Introduction

Northern Virginia has become one of the clearest examples of how artificial intelligence can run into physical limits. The region is the world’s largest concentration of data centres, hosting an enormous share of global cloud infrastructure and increasingly serving as a hub for AI computing. Its success, however, has created an infrastructure challenge that extends well beyond technology. Electricity demand has risen so quickly that transmission lines, substations and grid connections have struggled to keep pace, forcing utilities and regulators into one of the largest grid expansion efforts in the United States.[loudoun.gov]loudoun.govCounty Data Centers in Loudoun County | Loudoun County, VALoudoun CountyData Centers in Loudoun County | Loudoun County, VA - Official Website…

Within the wider debate about AI electricity demand and local grid bottlenecks, Northern Virginia demonstrates an important point. The problem is not that the United States lacks electricity overall, but that thousands of megawatts of new demand have become concentrated in a relatively small geographic area. If AI is eventually to support broader human flourishing through scientific discovery, automation and economic abundance, it will first require physical infrastructure capable of delivering vast amounts of reliable power.

How Northern Virginia became the world’s leading data-centre hub

The centre of this story is Loudoun County, particularly the Ashburn area, often called “Data Center Alley”. Decades of investment created an unusually attractive location for internet infrastructure:

This concentration created powerful network effects. Once the largest cloud providers established major campuses, suppliers, construction firms, engineers and telecommunications companies followed. New projects increasingly preferred to build beside existing infrastructure rather than elsewhere.

The result is a digital ecosystem unlike almost any other. Loudoun County now hosts one of the world’s highest concentrations of data centres, with tens of millions of square feet either operating or under development, while Northern Virginia remains by far North America’s largest data-centre market.[loudounpossible.com]loudounpossible.comOpen source on loudounpossible.com.

For years, this clustering was regarded almost entirely as an economic success story. Data centres generated substantial local tax revenues, supported construction activity and strengthened Virginia’s position in the digital economy. Only later did electricity infrastructure emerge as the principal constraint.

Where transmission and generation pressures are emerging

The challenge facing Northern Virginia is less about producing electricity than delivering it to exactly where demand has exploded.

Individual hyperscale AI and cloud campuses can require hundreds of megawatts of continuous power. When numerous projects seek connection within the same transmission corridor, existing substations and high-voltage lines quickly become overloaded.

By the early 2020s, PJM Interconnection—the regional grid operator—and Dominion Energy had concluded that existing infrastructure around the Dulles Airport and Loudoun County area would not safely accommodate projected growth without major new transmission investment. Planning documents warned of reliability violations under normal contingency conditions unless substantial upgrades were completed.[PJM]pjm.comDominion Northern Virginia Area Immediate Need SamDominion Northern Virginia Area Immediate Need Sam…

Several related pressures emerged simultaneously:

• transmission lines reached practical capacity;[cdn.arcgis.com]cdn.arcgis.comSource details in endnotes.
• substations required expansion or replacement;
• transformer availability became another bottleneck;
• connection studies grew increasingly complex as each new project affected the wider network;
• utilities faced unprecedented forecasting challenges because AI demand accelerated faster than earlier expectations.

Instead of simply approving new customers, utilities increasingly had to ask whether the surrounding grid could physically transport enough electricity during peak conditions.

The temporary power constraints that changed planning

One of the most significant developments was the acknowledgement that parts of Loudoun County would face temporary power constraints while new transmission projects were being completed.

Planning documents describe how data-centre developers were informed that available electrical capacity would remain constrained until major transmission upgrades entered service. Rather than an isolated engineering issue, this became a planning problem affecting developers, utilities, local government and residents simultaneously.[PJM]pjm.com20240809 ghiorzi letter re pjm 2022 window 3 upgrades scope changesJuly 31, 2024…Published: July 31, 2024

This represented an important shift in the industry’s assumptions.

For many years, developers generally assumed that if land could be purchased and permits obtained, electricity would eventually follow. Northern Virginia demonstrated that this assumption no longer held in the largest AI markets. Grid capacity itself became a scarce resource.

That scarcity also changed commercial behaviour. Access to an existing high-capacity substation increasingly became as valuable as access to fibre connectivity or suitable land.

Why AI makes the problem more difficult

Traditional cloud computing already consumes large amounts of electricity, but AI training clusters and inference services can increase demand substantially.

Large GPU (graphics processing unit) installations often operate continuously, drawing high electrical loads over long periods while also requiring extensive cooling infrastructure. Instead of modest incremental growth, utilities began receiving requests for enormous new loads arriving over only a few years.

Industry forecasts consequently rose rapidly, forcing Dominion Energy repeatedly to revise long-term demand expectations. The utility has expanded investment plans to strengthen transmission and distribution infrastructure, largely because of accelerating data-centre demand. Reuters has also reported that data-centre power requests have become one of the dominant drivers of Dominion’s capital spending and earnings outlook.[Reuters]reuters.comDominion Energy raises five-year capex plan to meet data centers' power demandThis growth is attributed to a surge in data centers focused on artificial intelligence and cryptocurrency, as well as increased power ne…

The broader implication is that AI changes not only total electricity consumption but also the speed at which infrastructure must be expanded.

The tension between economic gains and local costs

Northern Virginia illustrates why data-centre growth has become politically contentious.

Supporters point to substantial economic benefits:

County officials note that the industry contributes heavily to public finances and has become an important part of the local economy.[loudoun.gov]loudoun.govCounty Data Centers in Loudoun County | Loudoun County, VALoudoun CountyData Centers in Loudoun County | Loudoun County, VA - Official Website…

Critics, however, increasingly focus on different questions.

Residents have raised concerns about:

These debates have become more prominent as electricity demand forecasts have continued rising. Policymakers across Virginia and elsewhere are increasingly examining how the costs of serving extremely large data-centre customers should be allocated between technology companies, utilities and other consumers.[marketwatch.com]marketwatch.comOver 300 bills have been introduced in over 30 states to shift the financial burden from consumers to tech companies. At the federal leve…

What Northern Virginia reveals about concentrated AI growth

Northern Virginia has become a case study in how digital infrastructure eventually becomes physical infrastructure.

Three broader lessons stand out.

First, successful technology clusters can outgrow their electricity networks even when national generating capacity appears adequate. The limiting factor becomes local transmission rather than total energy production.

Second, grid expansion operates on much slower timescales than software development. New AI facilities can often be designed and constructed within a few years, whereas major transmission projects frequently require much longer because of planning, permitting, manufacturing and construction.

Third, infrastructure planning increasingly shapes where AI development occurs. If obtaining power becomes significantly easier in other regions, future investment may spread more widely rather than concentrating almost exclusively around Northern Virginia.

For advocates of an AI-enabled future of greater abundance, Northern Virginia offers both optimism and caution. The region demonstrates enormous demand for advanced computing and the economic value society places on digital infrastructure. At the same time, it shows that achieving larger gains from AI will depend not only on better algorithms and faster chips but also on the slower, less glamorous work of expanding electricity networks, coordinating investment and resolving local political conflicts. Without those foundations, even the world’s most successful AI and cloud clusters can find themselves waiting for the grid to catch up.

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Endnotes

1. Source: loudoun.gov
Title: County Data Centers in Loudoun County | Loudoun County, VA
Link:https://www.loudoun.gov/DataCenters

2. Source: pjm.com
Title: Dominion Northern Virginia Area Immediate Need Sam
Link:https://www.pjm.com/-/media/DotCom/committees-groups/committees/teac/2022/20220712/item-08—dominion-northern-virginia—immediate-need.ashx

3. Source: pjm.com
Title: 20240809 ghiorzi letter re pjm 2022 window 3 upgrades scope changes
Link:https://www.pjm.com/-/media/DotCom/about-pjm/who-we-are/public-disclosures/2024/20240809-ghiorzi-letter-re-pjm-2022-window-3-upgrades-scope-changes.pdf

Published: July 31, 2024

4. Source: reuters.com
Title: Dominion Energy raises five-year capex plan to meet data centers’ power demand
Link:https://www.reuters.com/business/energy/dominion-energy-raises-five-year-capex-plan-meet-data-centers-power-demand-2025-02-12/

5. Source: reuters.com
Link:https://www.reuters.com/business/energy/top-us-data-center-serving-utility-dominion-tops-profit-estimates-2026-07-31/

6. Source: marketwatch.com
Link:https://www.marketwatch.com/story/is-your-ai-data-center-stock-vulnerable-to-voter-backlash-use-this-5-part-test-to-find-out-36f039fa

7. Source: pjm.com
Title: A H1-727 Phase II System Impact Study Report
Link:https://www.pjm.com/pjmfiles/pub/planning/project-queues/TC2/PHASE_2/AH1-727/AH1-727_imp_PHASE_2.htm

8. Source: insidelines.pjm.com
Title: 2025 year in review planning prepares for burgeoning electricity demand
Link:https://insidelines.pjm.com/2025-year-in-review-planning-prepares-for-burgeoning-electricity-demand/

9. Source: insidelines.pjm.com
Title: pjm presents preliminary short list of projects for 2025 rtep window 1
Link:https://insidelines.pjm.com/pjm-presents-preliminary-short-list-of-projects-for-2025-rtep-window-1/

10. Source: pjm.com
Link:https://www.pjm.com/library/reports-notices/rtep-documents

11. Source: loudounpossible.com
Link:https://loudounpossible.com/data-centers

12. Source: bizjournals.com
Link:https://www.bizjournals.com/washington/news/2025/06/03/jll-report-northern-virginia-data-center-market.html

13. Source: cdn.arcgis.com
Link:https://cdn.arcgis.com/home/item.html?id=487f1d12f64b41b1b11a54434eea13ff

14. Source: datacenterdynamics.com
Title: Loudoun County data center market share drops as new Virginia jurisdictions rise
Link:https://www.datacenterdynamics.com/en/news/loudoun-county-data-center-market-share-drops-as-new-virginia-jurisdictions-rise/

Additional References

15. Source: cbre.com
Title: northern virginia extends lead as largest u s data center market in 2025
Link:https://www.cbre.com/press-releases/northern-virginia-extends-lead-as-largest-u-s-data-center-market-in-2025

16. Source: nvtc.org
Title: Northern Virginia Technology Council Data Center Report
Link:https://www.nvtc.org/communities/data-center-and-cloud/report/

17. Source: youtube.com
Title: Virginia Supreme Court appeal targets Dominion project
Link:https://www.youtube.com/watch?v=PjuTjRD0tf0

18. Source: youtube.com
Title: Why Your Cloud Apps Are More Fragile Than You Think
Link:https://www.youtube.com/watch?v=3V3bBAJK9x4

19. Source: eia.gov
Title: Commercial electricity sales have soared in Virginia, driven by data centers
Link:https://www.eia.gov/TODAYINENERGY/detail.php?id=67664

20. Source: youtube.com
Title: Northern Virginia Data Center Grid Event
Link:https://www.youtube.com/watch?v=GeplcsZe8_g

Published: July 2026

21. Source: youtube.com
Title: Did Data Centers Almost Break the US Power Grid?
Link:https://www.youtube.com/watch?v=TBYhZWvPTvE

Published: July 2026

22. Source: datacenterdynamics.com
Link:https://www.datacenterdynamics.com/en/news/dominion-reports-high-data-center-demand-in-northern-virginia-proposes-new-electricty-rates-for-large-load-customers/

23. Source: virginiaplaces.org
Link:https://www.virginiaplaces.org/energy/electricitytransmission.html

24. Source: dominionenergy.com
Link:https://www.dominionenergy.com/en/About/Delivering-Energy/Electric-Projects/Power-Line-Projects/Line-514