Horsepower BESS
257.5 MW hybrid in Bexar, TX · In queue since December 2025 · Proposed COD January 2028
257.5 MW
Capacity
0
Components
5 months
In Queue
—
IA Status
COD target: 2028
Total Duration
2y 1m
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: 2028-01-31
Horsepower BESS is a proposed 257.5 MW hybrid battery energy storage project in Bexar County, Texas. Developed by Horsepower BESS, LLC, the project consists of battery energy storage and other unspecified technologies. It is currently active in the ERCOT interconnection queue as entry ERCOT-28INR0390, with a queue entry date of December 17, 2025.
The proposed commercial operation date for Horsepower BESS is January 31, 2028. The point of interconnection (POI) is the 138 kV Howard Substation. The project has appeared in recent news coverage.
Generated from interconnection queue and public data sources
State
TX
County
Bexar
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Horsepower BESS, LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
POI is 138 kV Howard Substation (Bus# 5230) (SSWG bus name: HOWARD), NMMS station code: S1
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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