RSS feed source: US Energy Information Administration
In-brief analysis
June 11, 2025
Developers plan to add 18.7 gigawatts (GW) of combined-cycle capacity to the grid by 2028, with 4.3 GW already under construction, according to our latest Preliminary Monthly Electric Generator Inventory. Although electricity generators fueled by natural gas have provided more electricity in the United States than any other source since 2016, hardly any new natural gas capacity came online last year.
Combined-cycle units contribute to grid operation, reliability
Relatively efficient combined-cycle gas turbines (CCGTs) account for most of the natural gas-fired generating capacity in the United States. CCGT units are flexible and can quickly ramp up or down to respond to changes in power supply, supporting the reliability of the transmission system especially as more renewable capacity is integrated in the system.
The design lifetime of CCGT units is typically 25 years
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