AI Data Center Electricity Use : Demand Explained

Virginia hosts the world's largest concentration of data centers — nearly 600 of them, clustered most densely in Northern Virginia's so-called 'Data Center Alley.' By 2024, those facilities consumed roughly 40% of the state's total electricity, according to a Bloomberg analysis reported by Consumer Reports, a share no other U.S. state comes close to matching.

In 2026, Virginia's State Corporation Commission approved a new base rate case for Dominion Energy, the utility serving most of that growth, adding $11.24 a month to the average residential bill in 2026 and a further $2.36 a month in 2027 as the case phases in. The SCC's approved increase — $565.7 million in 2026 and $209.9 million in 2027 — was lower than Dominion's original request, and regulators also created a new large-load rate class specifically for customers demanding 25 megawatts or more, set to take effect in January 2027.

None of that proves the rate increase is caused by data centers specifically — Dominion's case covers its broader cost structure, not a single line item — but the timing and scale line up with a state where data centers now draw roughly four in every ten kilowatt-hours consumed.

Virginia's data centers don't draw power from an isolated grid — they sit inside PJM, the interconnection that coordinates electricity across 13 mid-Atlantic and Midwest states, including Maryland, Ohio, and West Virginia. When PJM ran its capacity auction for the 2025-2026 delivery year in 2024, prices cleared 833% higher than the year before, an increase independent market monitors and multiple energy-industry analyses attribute overwhelmingly to AI data-center demand. The Dominion Zone, the PJM sub-region covering most of Virginia's data centers, cleared even higher than the rest of PJM — its capacity fees now run roughly 65% above the wider grid's average.

That auction price doesn't stay in Virginia. PJM assigned $4.3 billion in data-center connection costs to customers across seven mid-Atlantic states in 2024, and residents in neighboring states are seeing it on their own bills: Maryland households are paying roughly $18 more a month, and Ohio households about $16 more, both tied directly to PJM capacity cost pass-through. West Virginia, which shares a utility — Appalachian Power — with parts of Virginia, is affected too. NPR reported in June 2026 that Virginia's data-center boom is raising West Virginia's electricity bills, though neither NPR's reporting nor any other source FactsFigs found gives a precise dollar figure for that specific impact.

Dominion Energy's own public position is that data centers 'pay their fair share' of the grid costs they create, and that they are not the reason residential bills are rising. In reporting from Virginia public broadcaster WHRO in March 2026, the utility attributed recent increases instead to weather-driven demand and a rider tied to gas-plant costs — not to the data-center buildout happening across its own service territory.

Independent energy researchers, NPR's reporting, and Virginia's own electorate see it differently. A January 2026 voter survey found 78% of Virginians blame data centers for their rising electricity bills, and researchers interviewed by WHRO pointed to the scale of data-center-driven grid investment — the same PJM capacity costs and infrastructure buildout detailed above — as a direct driver of the increases Dominion attributes elsewhere.

Neither side has produced a single number that settles exactly how many dollars of any specific bill increase trace back to a data center rather than weather or a gas-plant rider — and this analysis doesn't resolve that either. What the data does show is that the dollar figures moving through the system during this period (the 833% capacity auction spike, the $4.3 billion in reassigned connection costs) are large enough, and timed closely enough to the data-center buildout, that dismissing a connection outright would require its own explanation.

Virginia lawmakers introduced Senate Bill 253, the Fair and Affordable Electric Rates Reliability Act, to address exactly this imbalance — shifting capacity auction, distribution-line, and substation costs away from residential customers and onto large-load users like data centers instead. Governor Abigail Spanberger signed the bill into law in spring 2026, adding her own amendments; critics, including some of the bill's original backers, said those changes weakened its cost-shifting provisions.

The law authorizes Virginia's State Corporation Commission to approve a rate structure that would raise data-center electricity rates by roughly 15.8% while cutting average residential bills by about $5.52 a month — but signing the bill doesn't make that shift automatic. The SCC still has to actually approve the specific cost reallocation, a decision expected to take effect around January 1, 2027, for the same large-load customer class the 2026 Dominion rate case created.

If the SCC approves it, SB 253 would be the clearest evidence yet that Virginia's own regulators see data centers as a distinct cost driver worth separating from the rest of the grid — the opposite of Dominion's public position that no such separation is necessary.

Two things are true at once. Global AI data-center electricity demand is growing at a pace the grid hasn't handled before — 17% in 2025, with the AI-specific slice growing three times faster than that, and the IEA's own Base Case projecting a near-doubling to roughly 945 TWh by 2030. And in the specific regions absorbing that growth first — Virginia, Maryland, Ohio, and by NPR's reporting, West Virginia too — residential electricity bills are demonstrably rising alongside it, backed by an 833% capacity auction spike and $4.3 billion in reassigned connection costs that are hard to explain away as coincidence.

What the data doesn't settle is the exact dollar-for-dollar link Dominion Energy disputes. The utility's public position — that weather and a gas-plant rider, not data centers, explain the increases on its own bills — hasn't been directly disproven by anything in this dataset, even though independent researchers, NPR, and 78% of surveyed Virginia voters take the opposite view. Virginia's own legislature effectively sided with the researchers when it passed SB 253 in 2026, authorizing regulators to shift costs onto data centers specifically — a decision that only makes sense if lawmakers believed data centers were part of the cost story in the first place. Whether the State Corporation Commission actually approves that shift, and how much it moves the needle on any single household's bill, remains the one number this story can't yet report.