Symphony BESS
612 MW storage in Austin, TX · Proposed COD July 2028
612 MW
Capacity
1
Components
Battery
—
In Queue
Facility Study
IA Status
COD target: 2028
Interconnection request submitted to ISO/RTO
ERCOT uses a serial "connect and manage" approach — fastest among major ISOs.
Typical: 18–30 months (fastest major ISO)
Interconnection agreement not yet executed
Typical: 30–60 days (negotiation)
Proposed COD: 2028-07-01
The Symphony BESS project is a proposed 612 MW battery storage project located in Austin County, Texas. Developed by Symphony BESS, LLC, the project is currently active in the ERCOT interconnection queue as entry ERCOT-26INR0466. The proposed commercial operation date is July 1, 2028, and the project's interconnection status is currently in the Facility Study phase.
The Symphony BESS project consists entirely of battery storage, with a total capacity of 612 MW. The point of interconnection (POI) for the project is at the 46220 PETERS substation. The project has appeared in recent news coverage regarding energy storage developments in Texas.
Generated from interconnection queue and public data sources
State
TX
County
Austin
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Symphony BESS, LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
46220 PETERS
Data Source
LBNL + Live
- ISO / RTO
- ERCOT
- Trading Hub
- HB_HOUSTON
- Hub Confidence
- MEDIUM
- POI Substation
- Peters Substation
This project's market context is estimated from its Point of Interconnection. Hub and node assignments are approximate and based on geographic inference from the POI substation name.
