Pennsylvania is constructing 4.4 gigawatts of new gas-fired power generation capacity to support data center operations in the region.
Pennsylvania is projected to add 4.4 gigawatts of grid-connected natural gas generation by the end of 2030, representing nearly a 15% increase from the state's existing gas-fired capacity. This expansion is driven primarily by surging electricity demand from data centers reshaping the state's power infrastructure. According to analysis by PennEnvironment Research & Policy Center and Frontier Group using newly released U.S. Energy Information Administration data, Pennsylvania ranks behind only Texas and Louisiana in planned gas-generation additions through 2030.
The state is experiencing a significant pipeline of data center projects. PennEnvironment counted 70 existing data centers across Pennsylvania and identified 91 additional proposals, with much of the expected gas-generation increase directly linked to electricity demand from these grid-connected facilities. The EIA figures cover only generators planned for connection to local or regional electric grids and do not include natural gas plants that data center operators may build on-site.
Nationally, the scale of expansion is striking. Planned grid-connected gas capacity through 2030 has climbed to 60.4 gigawatts across 32 states and Washington, D.C., up 44% from 41.8 gigawatts anticipated in December 2025 and nearly triple the 20.4 gigawatts projected in January 2023. Texas accounts for approximately one-third of planned national additions with 20 gigawatts, followed by Louisiana at 6.6 gigawatts, Pennsylvania at 4.4 gigawatts, Oklahoma at 3 gigawatts, and Mississippi at 2.6 gigawatts. These five states represent 61% of all planned additions.
The expansion coincides with sharp increases in data center electricity consumption. Lawrence Berkeley National Laboratory estimates data centers accounted for 4.7% of U.S. electricity demand in 2024, up from 1.9% in 2018, with projections reaching 9.5% to 15.3% by 2030.
Environmental advocates warn that this trend could extend fossil-fuel dependence for decades. Combined-cycle gas plants typically operate for 25 to 30 years, locking in long-term emissions. PennEnvironment is calling for a moratorium on new data centers in Pennsylvania. "The proposals for new gas plants put forward by tech companies and utilities for new data centers would condemn another generation of Pennsylvanians to health-harming and planet-warming pollution," said Flora Cardoni, deputy director of PennEnvironment Research & Policy Center.
The analysis reveals a troubling divergence between gas and renewable capacity plans. Expected additions of solar power and battery storage have decelerated from previous growth rates, while planned wind additions have fallen 33.9% since December 2025. By 2030, three times as much new natural gas capacity as wind capacity is planned for the grid, reversing the relationship observed as recently as December 2024, despite solar remaining the largest anticipated source of new generating capacity.
Public-health concerns compound the energy picture. Natural gas plants emit nitrogen oxides that contribute to ozone formation and particulate pollution, while methane can escape during production and transportation. A separate modeling study cited by PennEnvironment estimated that under a high-growth scenario, pollution from fossil-fuel power plants, on-site gas turbines, and backup diesel generators serving data centers could contribute to roughly 600,000 asthma symptom cases and approximately 1,300 premature deaths annually by 2028.