The Data Center Energy Tax

The best questions are not always the comfortable ones. Like: if the cost of a resource is not being measured, is anyone actually paying for it. And who ends up covering the gap once someone finally decides to check.

Data center electricity use has been treated for years as a cost the grid absorbs and everyone else's bill eventually reflects. This week, Virginia stopped pretending otherwise, and the way it did it says as much about the data behind the AI buildout as the tax itself.

Virginia Puts a Price on What Was Free

Starting July 1, 2026, Virginia applies a consumption tax of $0.011 per kilowatt-hour to all electricity used by data centers, a first of its kind measure in the United States. Legislative budget documents estimate it will generate $600 million a year for the state's general fund, capped and refunded pro rata to operators if collections run higher (source: Data Center Knowledge). The tax applies to grid power and to electricity a facility generates for itself behind the meter, so there is no obvious way to site around it.

Virginia is the right place for this to happen first. It hosts the largest concentration of hyperscale data center capacity in the world, and new facilities there have faced waits of up to 14 years for a grid connection even as utilities plan a combined $208 billion in grid capital spending for 2025 alone (source: MarketScale). That gap between demand and delivered capacity is the real story underneath the tax. Lawmakers were not just chasing revenue. They were responding to a decade in which nobody had put a public number on what data center growth was actually costing the grid, and residents were left to infer it from rising bills and stalled connection queues.

The federal picture is moving the same direction. FERC has issued show cause orders to the six largest US grid operators, directing them to defend or rewrite their interconnection rules for large loads, with deadlines to define how gigawatt scale requests get evaluated and who pays for the upgrades they require (source: Data Center Knowledge). Pricing is catching up to physical reality. It is just catching up years after the reality showed up, and Virginia's tax is the first attempt to put a dollar figure on the years in between.

What the Tax Does Not Do

It is worth being precise here, because the honest answer complicates the headline. Virginia's tax revenue goes to the state's general fund, not back to household ratepayers, so this is not a rebate showing up on anyone's electricity bill (source: Forbes). A 100-megawatt facility running flat out owes roughly $9.6 million a year under the new rate, and a gigawatt-scale campus approaches $96 million, real money for operators but money that does not directly touch a resident's monthly statement (source: Forbes).

What the tax does signal is a much bigger, slower moving fight that will touch household bills directly: who pays for the new grid capacity that AI demand is forcing utilities to build. Wholesale power prices in parts of PJM territory are already projected to rise as much as 50 percent by 2028 as that new demand strains the system, and whether those costs land on data center operators or get spread across everyday ratepayers is still being litigated state by state, rate case by rate case (source: Forbes). Virginia's tax is one early, partial answer. More than 25 states are reportedly watching how it plays out before deciding whether to write their own version (source: Data Center Knowledge).

The Same Blind Spot, One Level Down the Supply Chain

The same week, a different industry admitted to a version of the same gap, just with water instead of electricity. The International Council on Mining and Metals released a new Global Mining and Metals Water Dataset covering 12,000 facilities across 148 countries, finding that 65.7 percent of mining and metals facilities worldwide sit in areas facing significant physical water risk (source: ICMM). Those are the same facilities that produce the copper, lithium, and rare earth elements going into every substation, transformer, and battery installation that Virginia and PJM are racing to build. A separate UN report found that global lithium production alone consumed an estimated 456 billion litres of water in 2024, with 16 percent of critical mineral extraction happening in areas already under high water stress (source: UN-Water).

The connection to Virginia's tax is direct rather than symbolic. Every dollar of that $208 billion in planned 2025 grid capital spending has to become copper wire and transformer steel before it becomes capacity. If the mines producing those materials are sitting in water constrained regions with no reliable pricing signal for that risk, the grid buildout the tax is meant to help pay for is itself resting on a supply chain nobody has fully priced either.

What It Means Going Forward

The pattern here is the one this newsletter keeps returning to. A resource gets treated as background infrastructure, cheap enough not to measure closely, until demand outgrows the assumption and someone is forced to put a number on it. Virginia's tax is that moment for data center electricity. It will not lower anyone's bill this year, and it will not solve the 14-year interconnection backlog. What it does is turn an invisible cost into a visible line item, which is usually the first step before a market, a regulator, or a household actually reacts to it. The next place to watch is whether other states follow Virginia's lead, and whether the rate cases now underway across PJM territory start pricing grid capacity the same way Virginia just priced data center electricity.

Sources:

Data Center Knowledge: Virginia Approves First-Ever Data Center Power Tax

MarketScale: Grid Energy in 2026, Connection Backlogs and AI Load Growth

Forbes: Power-Bill Fears Drove Virginia's First-In-Nation Data Center Tax

ICMM: Global Mining and Metals Water Dataset

UN-Water: UNU-INWEH Report on Critical Minerals, Water Insecurity and Injustice

Want to contribute your thoughts or findings in data and AI with climate, energy, or nature? Message Jan Gunash on LinkedIn or send an email to jgunash@projectcoeus.com.