Vistra Energy subsidiary Luminant has completed a 10MW energy storage system at the 180MW Upton 2 solar farm in Texas.
The lithium-ion battery project captures excess solar energy produced at Upton 2 during the day and releases the power in late afternoon and early evening, when energy demand is at its highest, Luminant said
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It added that the battery system can also take advantage of low-priced grid power – during times of high wind output, for example – to charge the batteries to be available for higher demand periods.
Vistra is also developing a 300MW storage facility at its Moss Landing power plant in California, scheduled for commercial operations in the fourth quarter of 2020.