Tidwell Prairie III Batt
200 MW storage in Robertson, TX · In queue since March 2021 · Proposed COD October 2026
200 MW
Capacity
1
Components
Battery
5y 2m
In Queue
Facility Study
IA Status
COD target: 2026
Total Duration
5y 7m
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: 2026-10-01
The Tidwell Prairie III Batt project is a proposed 200 MW battery storage project located in Robertson County, Texas. Developed by Tidwell Prairie III LLC, the project is interconnected within the ERCOT region under queue ID ERCOT-22INR0504. The project entered the interconnection queue on March 16, 2021, and has a proposed commercial operation date of October 1, 2026. Its interconnection status is currently in the Facility Study phase.
The development project consists of a 200 MW battery energy storage system. The point of interconnection is at the Tap 345kV 3400 Twin Oak - 39950 TNP One. The project is currently listed as active within the ERCOT interconnection queue.
Generated from interconnection queue and public data sources
State
TX
County
Robertson
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Tidwell Prairie III LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
Tap 345kV 3400 Twin Oak - 39950 TNP One
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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