According to the S. Energy Information Administration (EIA), US developers plan to add 18.7 GW of CCGT capacity to the grid by 2028, with 4.3 GW already under construction. Developers plan to add 1.6 GW of CCGT in 2025. Two of the four new plants—the Intermountain Power Project in Utah and Magnolia Power in Louisiana—will include the capability to co-fire with hydrogen and have a combined capacity of 1.5 GW. More than half of the 3.3 GW of capacity that developers expect to bring online in 2026 is already under construction. Most of the 3.3 GW capacity developers plan to bring online in 2027 is not yet under construction. Another 10.6 GW might be added in 2028.
If realized, that would be the most CCGT capacity coming online in any year since 2018. However, developers of all those planned units are working through regulatory approvals and securing needed equipment, both of which add uncertainty to their construction costs and initial operation date.
Although natural gas-fired power generators have provided more electricity in the US than any other source since 2016, almost no new gas-fired capacity came online in 2024. Only 98 MW were added at the Plaquemines power plant in Louisiana in 2024.
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