US utility Vistra has brought a 260MW/260MWh battery energy storage system (BESS) online in Texas, the largest in the state.
Vistra said yesterday (23 May) that the DeCordova Energy Storage Facility in Granbury, near Dallas, is online and participating in the wholesale energy markets on the ERCOT grid, the operator for the state.
The BESS is co-located on the site of the natural gas-fueled DeCordova Power Plant, operated by Vistra’s subsidiary Luminant. It will capture excess electricity from the grid, particularly overnight during hours of high wind production, and release the power in hours of peak demand.
It uses containerised lithium-ion batteries with 3,000 individual modules. Vistra has not revealed the supplier of the modules (it used LG Energy Solution for its Moss Landing Energy Storage Facility BESS, the largest in the world) but said that Sungrow supplied the inverters while engineering firm Mortensen provided “engineering and construction expertise”.
Jim Burke, Vistra president and chief financial officer, commented: “DeCordova offers a unique value proposition – not only can this battery system provide instantaneous full power to the grid with the flip of a switch, but it is also co-located on the same site as our quick-start DeCordova natural gas-fueled power plant.”