U.S. Natural Gas-Fired Plants Prep for End-of-Year Maintenance

Researched by Industrial Info Resources (Sugar Land, Texas)--With the U.S. Energy Information Administration (EIA) forecasting a record of 91.4 billion cubic feet per day (Bcf/d) of U.S. natural gas consumption for full-year 2025, gas-fired power plant owners are preparing to tune up their facilities for the end of the year. Industrial Info is tracking more than 110 maintenance-related projects at natural gas-fired power plants that are set to begin in the fourth quarter, totaling more than $620 million of investment. More than 85% of the spending is attributed to projects expected to kick off in October.

Click on the image at right for a graph detailing the top 10 parent companies for maintenance-related projects at natural gas-fired power plants across the U.S. that are set to begin construction from October through December, by total investment.

Duke Energy Corporation (Charlotte, North Carolina) leads all other gas-fired plant operators with $47 million worth of maintenance-related investment expected to begin work in the fourth quarter, including two in Florida: the 1,252-megawatt (MW) Paul L. Bartow Power Station in Saint Petersburg and the 820-MW Unit 2 at the Citrus County Power Station in Crystal River, which are expected to start in early October and run for two and five weeks, respectively.

Subscribers to Industrial Info's Global Market Intelligence (GMI) Power Project Database can learn more about Duke's Florida turnarounds, including information on related turbines and equipment, in detailed reports on the Saint Petersburg and Crystal River projects.

Duke recently agreed to sell a 20% stake in its Florida business to Brookfield Asset Management (Toronto, Ontario) for $6 billion, partly to boost Duke's five year-capital spending program. For more information, see August 6, 2025, article - Duke Boosts Five-Year Capex Plan to $87 Billion After Selling Florida Unit Stake.

Duke also is preparing for four maintenance outages in its home state of North Carolina:

• the 641-MW Block 5 at the Sherwood H. Smith Jr Energy Complex in Hamlet; see project report
• the 642-MW Block 4 at the Louis V. Sutton Energy Complex in Wilmington; see project report
• the 1,048-MW H.F. Lee Combined Cycle Plant in Goldsboro; see project report
• the 650-MW Buck Power Station in Salisbury; see project report

Calpine Corporation (Houston, Texas) accounts for a dozen maintenance-related project starts in the fourth quarter, a higher count than any other company. These include two projects at natural gas-fired, combined-cycle (NGCC) plants near the Houston Ship Channel in Texas: the 180-MW Unit 6 at its plant in Deer Park and the 933-MW Block 16 at its plant in Baytown. Both plants use heavy-frame combustion turbines from Siemens AG (Munich, Germany) and heat-recovery steam generators from Nooter/Eriksen Incorporated (St. Louis, Missouri). Subscribers can learn more from detailed reports on the Deer Park and Baytown projects.

Calpine soon will be under new management: In July, the U.S. Federal Energy Regulatory Commission (FERC) approved Constellation Energy Corporation's (Baltimore, Maryland) $16.4 billion acquisition of Calpine, on the condition that the new entity divest ownership in four power plants on the PJM Interconnection so it does not hold an outsized share of the market. One of those plants is the 1,153-MW Bethlehem Energy Center in Bethlehem, Pennsylvania, which is preparing for 28 days of maintenance on two power blocks.

For more information, see July 2, 2025, article - FERC's Approval of Constellation's Acquisition of Calpine Requires Divestment of Four Power Plants; subscribers can learn more from a detailed project report.

Vistra Corporation (Irving, Texas) narrowly trails Calpine in its total investment in fourth-quarter maintenance kickoffs, which include three projects in the Dallas-Fort Worth area: the 418-MW Ennis Power Station in Ennis, which is expected to run 30 days; units 3 and 4 at the DeCordova Power Station in Granbury, which total 170 MW and will run 35 days; and the 947-MW Block 2 at the Forney Generating Station in Forney, which will run 15 days. Subscribers can read detailed reports on the Ennis, DeCordova and Forney projects.

Subscribers to Industrial Info's GMI Project and Plant databases can click here for a full list of detailed reports for projects mentioned in this article, and click here for a full list of related plant profiles.

Subscribers can click here for a full list of reports for maintenance-related projects at natural gas-fired power plants across the U.S. that are set to begin construction in the fourth quarter.

Industrial Info Resources (IIR) is the leading provider of industrial market intelligence. Since 1983, IIR has provided comprehensive research, news and analysis on the industrial process, manufacturing and energy related industries. IIR's Global Market Intelligence (GMI) platform helps companies identify and pursue trends across multiple markets with access to real, qualified and validated plant and project opportunities. Across the world, IIR is tracking more than 200,000 current and future projects worth $17.8 trillion (USD).