Grid-scale

esVolta commissions final project in 980 MWh Texas battery trio

Three new battery energy storage systems (BESS) lithium-iron phosphate battery projects add 490 MW of peak power with two-hour duration to the ERCOT grid.

By

Tristan Rayner

Jul 31, 2025

Energy storage developer esVolta has completed and brought online a portfolio of three utility-scale battery storage projects in Texas, totaling 490 MW of power and 980 MWh of energy capacity. The projects became operational ahead of the summer peak demand season on the state’s ERCOT grid.

The portfolio consists of the 150 MW / 300 MWh Desert Willow project in Ellis County, the 240 MW / 480 MWh Anole project in Dallas County, and the 100 MW / 200 MWh Burksol facility in Dickens County. The Burksol project began commercial operations in March 2025, Desert Willow followed in May, and the Anole project was the last to come online in July.

Together, the three sites represent approximately four percent of ERCOT’s anticipated 12.2 GW of total storage capacity as of July 2025. The facilities all use two-hour duration lithium-iron phosphate battery technology and are intended to provide fast-responding energy and ancillary services, helping to reduce grid congestion. The Burksol project is interconnected with the Wind Energy Transmission of Texas grid.

The Desert Willow site in Texas, Image: esVolta, LP

esVolta representation to ESS News that Sungrow’s PowerTitan 1.0 BESS batteries are used on its sites at Desert Willow, Anole, and Burksol.

Randolph Mann, Chief Executive Officer of esVolta, said, “Texas is at the forefront of the energy transition, and large-scale battery storage is playing a critical role in ensuring a reliable and resilient grid. By bringing these three projects online ahead of peak summer demand, we are helping to stabilize the ERCOT grid and meet the state’s growing demand for electricity. Our commitment to deploying cutting-edge technology and driving innovation underscores esVolta’s dedication to delivering real solutions for Texas’ growing energy needs.”

esVolta developed, owns, and operates the projects. The company worked with Saber Power on engineering, procurement, and construction for the Desert Willow and Burksol sites, and with Quanta Infrastructure Solutions Group for the Anole project. Financing included a preferred equity investment from Captona and debt financing led by Mitsubishi UFJ Financial Group.

Note: Updated with confirmation of the Sungrow BESS.

Written by

Tristan Rayner

Tristan is an Electrical Engineer with experience in consulting and public sector works in plant procurement. He has previously been Managing Editor and Founding Editor of tech and other publications in Australia.

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