US Gas Plant Pipeline Swells 44% as Data Centers Rewrite the Power Map

America’s fossil fuel buildout is accelerating at a pace that has surprised even close watchers of the power sector. According to a fresh analysis from Environment America Research & Policy Center and Frontier Group, utilities and developers now have 60.4 gigawatts of grid-connected gas capacity on the drawing board for completion by the end of 2030 — a 44% jump from the 41.8 GW that was tracked just eight months earlier, in December 2025, based on filings with the federal Energy Information Administration.

To grasp the scale, the advocacy groups note that the proposed fleet on its own would outstrip the entire generating capacity of every single US state except Texas, California, and Florida. While not every project will ultimately break ground, the trend line is unmistakable: gas is filling the gap left by a slowdown in renewables. Planned wind additions have slipped 33.9% since late 2025, and solar’s momentum has plateaued even though it still tops the list of expected new capacity.

The culprit, according to the report, is the runaway appetite of data centers. “Surging electricity demand to power data centers is putting our nation’s transition to clean energy at risk,” said Andre Delattre, senior vice president and chief operating officer at The Public Interest Network. Because gas plants typically operate for decades, he warned, today’s construction decisions could lock the country into long-term dependence on fossil fuels. The findings come with an interactive map that lets readers trace where the planned capacity is concentrated.

Geography matters here. Texas alone accounts for 33.2% of the proposed grid-connected additions — roughly a third of the national pipeline — and if built out, those projects would expand the state’s existing gas fleet by nearly a quarter. Louisiana follows at 6.6 GW, then Pennsylvania at 4.4 GW, Oklahoma at 3 GW, and Mississippi at 2.6 GW. Together those five states represent about 60% of the total. The tally also excludes a potentially enormous category: off-grid gas turbines erected specifically to feed data centers directly, which the groups say could add tens of gigawatts beyond what’s counted.

The public health implications are steep. Gas combustion contributes to soot and ground-level ozone, and methane — the primary component of natural gas — escapes throughout extraction and delivery. The analysis leans on modeling that projects close to 600,000 asthma symptom cases and roughly 1,300 premature deaths in 2028 alone under a high-growth data center scenario, factoring in pollution from power plants, on-site turbines, and backup diesel generators. “If we build new gas plants, in addition to delaying the retirement of coal plants and slowing the growth of renewables, we jeopardize our health, our planet, and the well-being of future generations,” said Johanna Neumann, senior director of the Campaign for 100% Renewable Energy at Environment America. The organizations stress that the figures describe planned projects rather than confirmed construction — yet the speed of the shift still signals how firmly electricity demand is reshaping the country’s energy trajectory.