PowerVault BESS
254.8 MW storage in Mclennan, TX · In queue since March 2024 · Proposed COD July 2027
254.8 MW
Capacity
1
Components
Battery
2y 2m
In Queue
Facility Study
IA Status
COD target: 2027
Total Duration
3y 4m
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: 2027-07-01
PowerVault BESS is a proposed 254.8 MW battery storage project located in McLennan County, Texas. The project, being developed by SMT Elm Mott BESS, entered the ERCOT interconnection queue as project ERCOT-26INR0422 on March 22, 2024. Its proposed commercial operation date is July 1, 2027. The project's interconnection status is currently in the Facility Study phase.
The proposed project consists entirely of battery storage with a total capacity of 254.8 MW. The point of interconnection is Tap 345kV 3406 Elm Mott - 3405 Tradinghouse Ses. Recent news coverage indicates the project has been mentioned in articles related to grid infrastructure.
Generated from interconnection queue and public data sources
State
TX
County
Mclennan
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
SMT Elm Mott BESS
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
Tap 345kV 3406 Elm Mott - 3405 Tradinghouse Ses
Data Source
LBNL + Live
- ISO / RTO
- ERCOT
- Trading Hub
- HB_NORTH
- Hub Confidence
- MEDIUM
- POI Substation
- Elm Mott Substation
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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