Gunnar BESS
203 MW storage in Hidalgo, TX · In queue since February 2023 · Proposed COD August 2026
203 MW
Capacity
1
Components
Battery
3y 3m
In Queue
IA Executed
IA Status
Signed Sep 2023
Queue → IA
7 months
IA → COD
2y 11m
Total Duration
7 months
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 executed — binding commitment to build
Typical: 30–60 days (negotiation)
Project under construction
Typical: 6–18 months
Proposed COD: 2026-08-31
The Gunnar BESS project is a proposed 203 MW battery storage project located in Hidalgo County, Texas. Developed by BRP Blue Topaz 6, LLC, the project entered the ERCOT interconnection queue as ERCOT-24INR0491 on February 9, 2023, with a proposed commercial operation date of August 31, 2026. The interconnection agreement for the project was executed on September 22, 2023.
The Gunnar BESS project is actively listed in the ERCOT interconnection queue and has been featured in recent news coverage.
Generated from interconnection queue and public data sources
State
TX
County
Hidalgo
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
BRP Blue Topaz 6, LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
8029 CLOSNER4A 138kV
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.
Last updated 2026-04-09
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