Iron Cowboy Storage
63.27 MW hybrid in San Patricio, TX · In queue since June 2025 · Proposed COD December 2028
63.27 MW
Capacity
0
Components
11 months
In Queue
—
IA Status
COD target: 2028
Total Duration
3y 6m
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: 2028-12-29
The Iron Cowboy Storage project is a proposed 63.27 MW hybrid battery energy storage project located in San Patricio County, Texas. Developed by Vaquero II Storage, LLC, the project consists of battery energy storage and other unspecified technologies. It is interconnected within the ERCOT region under queue ID ERCOT-28INR0306, with an interconnection queue entry date of June 5, 2025, and a proposed commercial operation date of December 29, 2028.
The project is currently listed as active in the ERCOT interconnection queue. The point of interconnection (POI) is Bus #8920 Haisley 4A 138 kV.
Generated from interconnection queue and public data sources
State
TX
County
San Patricio
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Vaquero II Storage, LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
Bus #8920 Haisley 4A 138 kV
Data Source
Live · ERCOT
- 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.
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