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As brutal heat tests Texas’ power grid, batteries play a small but growing role in keeping the lights on

This summer, industrial scale batteries have helped boost the energy supply during critical evening hours. Battery storage represents a small fraction of Texas’ energy mix now, but it’s expected to rise sharply in coming years.

An engineer walks past battery banks and inverters at GlidePath's Byrd Ranch energy storage facility in Sweeny, on May 23, 2023.

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