The American data center boom will require roughly 45 gigawatts of new generating capacity by 2030, an investment of about $110 billion, Moody’s Ratings estimated in a report published September 14. More than 30 gigawatts of that total would come from natural gas plants, the report said, the equivalent of burning about four billion cubic feet of gas per day more than the grid consumes today.
The figures put a concrete number on a strain that utility executives, grid operators, and policymakers have described for two years. Data centers draw power around the clock, and the largest new facilities can demand as much electricity as a mid-sized city.
Most of the new generation, according to Moody’s, will lean on natural gas. That is a reversal for an industry that had spent a decade preparing for a shift away from fossil fuels, and it explains why gas turbine makers and pipeline operators have become quiet winners of the AI trade.
Northern Virginia anchors the story. The region around Loudoun County, long known as Data Center Alley, hosts one of the densest concentrations of data centers in the world, and Dominion Energy is the utility that must serve most of them. As cloud providers have added capacity, the region’s power demand has grown faster than its supply.
Across the country, the queue for new grid connections has become the industry’s most visible bottleneck. Thousands of projects wait years for the transmission studies and upgrades needed to deliver power. The Moody’s estimate assumes utilities and grid operators can work through that backlog far faster than they have to date.
The reliance on natural gas has already reshaped industrial supply chains. Gas turbine manufacturers have reported swelling order backlogs, and developers have begun locking up turbines years in advance, according to industry executives, because the equipment is built on a schedule that cannot easily be accelerated.
The math has political consequences. Utilities that once expected flat electricity demand now plan for growth, and the cost of new plants and transmission lines eventually lands on ratepayers. State regulators have begun asking who should bear that cost: households or the data center customers driving the demand.
The same day the report landed, two utilities trying to merge offered an answer. NextEra Energy and Dominion Energy, which are seeking approval to combine, unveiled a package of commitments for Virginia, according to a September 14 announcement. The companies said they would extend bill credits for residential customers from two years to four years, at ten dollars per month.
The package also promised one thousand new local jobs and a pledge to make data centers carry the costs their demand creates. The utilities said credits that would have flowed to large data center customers would instead be redirected to residential bills.
The NextEra-Dominion package is aimed squarely at the political audience in Virginia. Combining the two companies requires approval from state regulators and shareholders, and commitments on bill credits and jobs are the currency of that approval process. Redirecting credits away from data centers and toward households is the clearest signal that the companies intend to make the deal defensible.
Virginia has become ground zero for the tension between growth and local resistance. The data center corridor has drawn opposition from residents concerned about water use, noise, and the strain on the grid, and those concerns now shape the terms under which new capacity can be built.
Analysts said the Moody’s estimate and the utility concessions are two sides of the same negotiation. Developers need power to keep building; utilities need public and regulatory support to build the plants that supply it; and residents need assurance that their bills will not rise to subsidize someone else’s compute.
The $110 billion figure is a floor, not a ceiling, according to the report’s framing. It covers only the generation side and does not include transmission upgrades, substations, or the data centers themselves, which run into the hundreds of billions of dollars.
For gas producers, the numbers imply a durable new source of demand. Forty billion cubic feet per day would be a meaningful addition to U.S. consumption, and it arrives at a moment when export terminals are already pulling more gas toward the coasts.
For the utilities, the risk is execution. Building tens of gigawatts of gas generation within six years requires turbines, permits, and gas supply contracts, all of which have grown harder to secure. Delays would leave the data center boom short of the power it has promised.
The NextEra-Dominion commitments are designed to smooth a regulatory path, according to people familiar with the process. Whether they succeed will test whether the industry can convert a power shortage into a political bargain, and whether that bargain holds as the megawatts pile up.
