Pinnington Storage
508.7 MW storage in Jack, TX · In queue since December 2020 · Proposed COD April 2029
508.7 MW
Capacity
1
Components
Battery
5y 5m
In Queue
Facility Study
IA Status
COD target: 2029
Total Duration
8y 4m
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: 2029-04-20
The Pinnington Storage project is a proposed 508.7 MW battery energy storage system in Jack County, Texas. The project, developed by Hecate Energy Longhorn Storage LLC, is currently active in the ERCOT interconnection queue as entry ERCOT-24INR0011, with a queue entry date of December 3, 2020. Its proposed commercial operation date is April 20, 2029, and its interconnection agreement status is currently in the Facility Study phase.
The proposed project involves a point of interconnection (POI) at the tap of both 345kV 1430 Graham - 1436 Parker 345kV lines. Recent news coverage indicates ongoing development activity related to the Pinnington Storage project.
Generated from interconnection queue and public data sources
State
TX
County
Jack
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Hecate Energy Longhorn Storage LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
tap both 345kV 1430 Graham - 1436 Parker 345kV lines
Data Source
LBNL + Live
- ISO / RTO
- ERCOT
- Trading Hub
- HB_NORTH
- Hub Confidence
- LOW
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.
