From January through April 2025, 563 MW of battery energy storage capacity became commercially operational in ERCOT. This brought the system total to 8,461 MW of rated power and 12,780 MWh of energy capacity.
New deployments were made in all four load zones - and a further 3 GW of capacity is poised to reach commercial operations by year-end.
In this report, you’ll understand:
- Which companies contributed to the 563 MW of new battery energy storage additions in the first four months of 2025.
- Where ERCOT's largest near-term projects are being built - and by whom.
- Which counties and zones are seeing the biggest shift in development activity.
- What share of ERCOT's 170+ GW queue is likely to reach commercial operations - and when.
Key takeaways:
In the first four months of 2025, 563 MW of battery energy storage added across all four load zones.