Big Five Storage
102.18 MW storage in Hidalgo, TX · In queue since May 2023 · Proposed COD January 2028
102.18 MW
Capacity
1
Components
Battery
3 years
In Queue
Facility Study
IA Status
COD target: 2028
Total Duration
4y 8m
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: 2028-01-15
The Big Five Storage project is a proposed 102.18 MW battery storage project located in Hidalgo County, Texas. The developer is TX BESS 3 LLC. It is currently active in the ERCOT interconnection queue as entry ERCOT-25INR0239, with a queue entry date of May 26, 2023.
The proposed commercial operation date for Big Five Storage is January 15, 2028. The project's interconnection status is currently in the Facility Study phase. The point of interconnection is Tap 138kV (5784) Redgtss - (8380) Nedina.
Generated from interconnection queue and public data sources
State
TX
County
Hidalgo
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
TX BESS 3 LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
Tap 138kV (5784) Redgtss - (8380) Nedina
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.
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