ERCOT battery energy storage buildout: Record-breaking BESS in June

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The Electric Reliability Council of Texas (ERCOT) has achieved a significant milestone by clearing 650MW of battery storage capacity for commercial operation in June 2024, as reported in the system operator’s monthly generation interconnection status report. Texas is expected to lead in Battery Energy Storage Systems (BESS) deployment this year, with forecasts indicating the state will deploy 6.4GW of new battery storage capacity in 2024, surpassing other states like California. This brings the total rated power of commercially operational BESS in Texas to 5.3 GW, showing a substantial growth since the beginning of 2023.

In June 2024, ERCOT not only experienced the largest-ever increase in rated power and energy capacity but also saw the commissioning of the largest battery projects in terms of rated power and energy capacity. ENGIE's Five Wells project became the largest battery by rated power in ERCOT at 221 MW, surpassing previous projects. Plus Power also completed two projects, Ebony and Anemoi, with 400 MWh energy capacities each, contributing significantly to ERCOT’s total installed battery energy storage capacity. The trend towards two-hour resources continues in ERCOT, with longer-duration systems capturing more revenues from various markets and enhancing energy arbitrage capabilities.