Sullivan BESS
72.51 MW storage in Hidalgo, TX · In queue since March 2024 · Proposed COD February 2029
72.51 MW
Capacity
1
Components
Battery
2y 2m
In Queue
Facility Study
IA Status
COD target: 2029
Total Duration
4y 11m
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: 2029-02-25
Sullivan BESS is a proposed 72.51 MW battery storage project located in Hidalgo County, Texas. Developed by Sullivan Solar LLC, the project is currently active in the ERCOT interconnection queue as entry ERCOT-26INR0444, with a queue entry date of March 22, 2024. The project's proposed commercial operation date is February 25, 2029, and its interconnection agreement status is currently in the Facility Study phase.
The point of interconnection for Sullivan BESS is Tap 138 kV La Grulla (Bus# 8798) - Goodwin (Bus# 8355). Recent news coverage has discussed the development project.
Generated from interconnection queue and public data sources
State
TX
County
Hidalgo
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Sullivan Solar LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
Tap 138 kV La Grulla (Bus# 8798) - Goodwin (Bus# 8355)
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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