Texas Adds 456 MW of Gas-Fired Power in Houston as ERCOT Braces for Summer Demand
Texas Governor Greg Abbott said Wednesday that 456 megawatts of new natural gas-fired generation at NRG Energy (NYSE: NRG)’s TH Wharton Generating Station in Houston has entered service, adding dispatchable power to the ERCOT grid as the state heads into another high-demand summer.
The new simple-cycle combustion turbine units were supported by a loan from the Texas Energy Fund, a state-backed program created to encourage the construction of new, reliable generation and grid-resiliency projects. Abbott’s office said the new units can supply enough electricity to power more than 100,000 Texas homes during peak hours.
The project comes as Texas faces a widening challenge: how to add enough power generation and transmission capacity to keep pace with population growth, industrial expansion and a wave of large-load interconnection requests from data centers, bitcoin miners and other energy-intensive users.
ERCOT has warned that demand growth in Texas is accelerating faster than in previous planning cycles. The grid operator’s latest long-term forecast projected demand in the ERCOT region could reach about 367.8 GW by 2032, compared with an all-time peak of 85.5 GW recorded in August 2023. The forecast reflects not only traditional load growth but also a surge of proposed large-load projects seeking to connect to the grid.
The new TH Wharton units are designed to respond quickly during periods of peak demand, including hot summer afternoons and severe winter weather events. Simple-cycle gas turbines generally have higher operating costs than combined-cycle plants, but they can start and ramp faster, making them useful for reliability support when demand spikes or renewable output shifts.
“This project is exactly the kind of outcome Texans voted for when they approved the TxEF,” Public Utility Commission of Texas Chairman Thomas Gleeson said in the announcement. “NRG’s project coming online shows the fund is delivering real, measurable benefits for Texans and putting taxpayer dollars to work to strengthen the grid.”
NRG Chief Executive Officer Robert Gaudette said the units were delivered safely, on budget and on schedule, touting the Texas Energy Fund “a practical, made-in-Texas solution” to the state’s reliability challenge.
The Houston project is part of a broader NRG buildout backed by the same state program. The company is also advancing Texas Energy Fund-supported projects at its Cedar Bayou and Greens Bayou sites. Together, NRG’s planned projects are expected to add more than 1.5 GW of new natural gas generation capacity in Texas by 2028.
The timing is significant for ERCOT, where summer demand peaks are central not only to reliability planning but also to the cost structure faced by large electricity users. Under ERCOT’s four coincident peak, or 4CP, mechanism, four 15-minute systemwide peak intervals during the summer months help determine transmission cost allocation for the following year. That makes peak management a material operating issue for flexible loads such as bitcoin mining sites and, increasingly, certain data-center operators.
For the state, however, the broader question is whether new dispatchable plants, transmission upgrades and stricter large-load interconnection rules can keep pace with the scale of demand now being proposed. The 456 MW added at TH Wharton is a meaningful near-term addition for the Houston load zone, but it is small relative to the hundreds of gigawatts of potential demand now appearing in ERCOT’s planning queue.
That mismatch is likely to keep Texas grid policy in focus through the summer, as lawmakers, regulators, utilities and large-load customers debate how quickly the state can build enough reliable capacity without pushing more costs onto households and existing businesses.
