Cornwall BESS
203.8 MW storage in Williamson, TX
203.8 MW
Capacity
1
Components
Battery
—
In Queue
—
IA Status
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)
Commercial operation date not yet determined
State
TX
County
Williamson
Region
ERCOT
Developer
—
Utility
—
Entity
ERCOT
Data Source
LBNL
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Last updated 2026-03-26