Rock Creek BESS
251.05 MW storage in Kendall, TX · In queue since February 2024 · Proposed COD December 2026
251.05 MW
Capacity
1
Components
Battery
2y 3m
In Queue
Facility Study
IA Status
COD target: 2026
Total Duration
2y 10m
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: 2026-12-01
The Rock Creek BESS is a proposed 251.05 MW battery storage project located in Kendall County, Texas. Developed by Flat Rock Energy Center, LLC, the project entered the ERCOT interconnection queue as entry ERCOT-26INR0407 on February 27, 2024. Its proposed commercial operation date is December 1, 2026, and its interconnection status is currently in the Facility Study phase.
The Rock Creek BESS development has been featured in recent industry news.
Generated from interconnection queue and public data sources
State
TX
County
Kendall
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Flat Rock Energy Center, LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
7150 Kendall 138kV
Data Source
LBNL
- ISO / RTO
- ERCOT
- Trading Hub
- HB_WEST
- Hub Confidence
- MEDIUM
- Nearest Node (Estimated)
- HHOLLW2_WND1
- POI Substation
- Horse Hollow Kendall Tie
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 2026-03-26
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