SunShiner ESS
200 MW storage in Zavala, TX · In queue since September 2023 · Proposed COD July 2027
200 MW
Capacity
1
Components
Battery
2y 8m
In Queue
Facility Study
IA Status
COD target: 2027
Total Duration
3y 10m
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: 2027-07-01
The SunShiner ESS project is a proposed 200 MW battery storage project located in Zavala County, Texas. Developed by SunShiner ESS LLC, the project entered the ERCOT interconnection queue as queue ID ERCOT-26INR0179 on September 25, 2023. Its proposed commercial operation date is July 1, 2027, and its interconnection status is currently in the Facility Study phase.
The proposed project is linked to the existing SunShiner ESS operating plant (EIA plant ID 68363).
Generated from interconnection queue and public data sources
State
TX
County
Zavala
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
SunShiner ESS LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
8672 LaPryor2A 138 kV
Data Source
LBNL + Live
- ISO / RTO
- ERCOT
- Trading Hub
- HB_SOUTH
- Hub Confidence
- HIGH
- POI Substation
- La Pyor 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.
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