Battery storage facilities and solar farms powered virtually all capacity growth in Texas’ electric grid throughout 2025, as the home of the nation’s oil and gas industry created almost twice as much new solar power as California.

More than 5,200 megawatts, or approximately 10,500 megawatt hours, of new battery storage made up the largest share of the more than 11,000 megawatts of new capacity, according to the Electric Reliability Council of Texas (ERCOT), operator of Texas’ electric grid. Solar power accounted for the second-largest capacity addition, with more than 4,500 megawatts installed.

Pablo Vegas, ERCOT’s president and CEO, said during a board of directors meeting Tuesday that the new solar power represented “high” growth in intermittent power, while he characterized the new ba

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