Panhandle Flagship Storage
371.7 MW storage in Carson, TX · In queue since March 2023 · Proposed COD June 2031
371.7 MW
Capacity
1
Components
Battery
3y 2m
In Queue
Facility Study
IA Status
COD target: 2031
Total Duration
8y 3m
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: 2031-06-30
Panhandle Flagship Storage is a proposed 371.7 MW battery storage project located in Carson County, Texas. The project, developed by Panhandle Solar Group Operating Company LLC, is currently active in the ERCOT interconnection queue as entry ERCOT-27INR0025, with a queue entry date of March 13, 2023. The proposed commercial operation date is June 30, 2031.
The project's interconnection status is currently in the Facility Study phase. The point of interconnection is the 345 kV Railhead Substation. The project has appeared in recent news.
Generated from interconnection queue and public data sources
State
TX
County
Carson
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Panhandle Solar Group Operating Company LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
345 kV Railhead Substation (RAILHEAD #79005)
Data Source
LBNL + Live
- ISO / RTO
- ERCOT
- Trading Hub
- HB_WEST
- Hub Confidence
- MEDIUM
- POI Substation
- Railhead 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.
