Remember when the software king of the world, Microsoft, pledged to protect people from having to pay high electricity bills for its data centres? It turns out it didn’t mean it, and it wasn’t the environmentally friendly vole everyone thought it was.
According to Financial Times the software giant has appealed to the Virginia Supreme Court against new rules requiring data centre builders to fund transmission infrastructure built for their projects before the meter starts spinning.
For those who came in late, in March 2026 it joined Amazon, Google, Meta, xAI, Oracle and OpenAI at the White House to sign US President Donald Trump’s “ratepayer protection pledge”.
The companies promised to be “paying the full cost of their energy and infrastructure, no matter what”.
Virginia hosts the world’s largest concentration of data centres, and the power demands are making local regulators increasingly nervous about who ends up paying for the necessary grid expansion.
Data centre projects worth more than $130bn were blocked or delayed across the US during the first quarter of 2026, according to Data Centre Watch.
The backlash has focused on electricity prices, water use and noise pollution. Microsoft cancelled plans for a 244-acre data centre in Caledonia, Wisconsin, in October 2025 after facing local opposition.
US Energy Information Administration figures cited by the Financial Times show residential electricity prices have risen 15 per cent since Trump took office. Virginia utility Dominion Energy asked the state’s State Corporation Commission earlier this year for permission to recover more than $1.5bn spent developing transmission infrastructure.
Traditionally, Dominion financed much of that work itself and recouped the costs through customer bills. Regulators decided that the arrangement looked increasingly unsuitable when enormous data centre campuses were driving much of the new demand.
Virginia governor Abigail Spanberger’s office urged regulators to protect customers from “severe stranded-asset risks” and utility “capital biases that prioritise shareholder profits over Virginia’s ratepayers”.
In July 2026, the commission ordered Dominion to charge data centres directly and upfront for transmission infrastructure constructed for them.
Microsoft had argued during the proceedings that Virginia’s approach could conflict with federal attempts to standardise how data centres pay for grid upgrades.
The company appealed directly to Virginia’s Supreme Court on 28 August 2026, following the procedure for challenging commission rulings.
Its notice of appeal did not spell out which parts of the ruling Microsoft wants overturned. Microsoft said it remains committed to bearing “the costs [data centres] cause” and said its appeal seeks to ensure that cost allocation “appropriately applies cost-causation principles”.
The outfit has at least 11 data centre campuses operating, planned, or under construction in Virginia. Dominion serves roughly two-thirds of the state, including “data centre alley”, the largest concentration of such facilities anywhere in the world.
Microsoft was the first major technology company to publicly promise in January 2026 to pay higher electricity rates in areas where it builds data centres to cover the cost of new generation and transmission infrastructure.
Harvard Law School Electricity Law Initiative director Ari Peskoe said the court challenge creates a rather obvious image problem.
“I would have guessed for a trillion-dollar corporation like Microsoft, the amount of money at issue here is not worth the PR pushback you’re going to get,” Peskoe said.
The White House pledge has no enforcement mechanism and leaves plenty of room for interpretation about exactly which infrastructure costs the companies are expected to swallow.
Big Tech has generally supported mechanisms that allow infrastructure costs to be paid over time rather than upfront. Critics argue that the approach can leave ordinary electricity customers paying for transmission assets if promised data centres are cancelled, scaled down, or prove uneconomic.
That risk is becoming harder to ignore as hyperscale facilities chew through industrial quantities of electricity. A large campus typically needs at least 100MW, enough to supply about 50,000 homes.
Dominion said it already has “among the strongest protections in the country to prevent data centre-driven costs from being borne by our residential customers” and that it “will be adding even more protections”.
