M-Bar BESS I
82.1 MW storage in Ector, TX · In queue since December 2024 · Proposed COD September 2028
82.1 MW
Capacity
1
Components
Battery
1y 5m
In Queue
Facility Study
IA Status
COD target: 2028
Total Duration
3y 9m
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: 2028-09-18
M-Bar BESS I is a proposed 82.1 MW battery storage project in Ector County, Texas. Developed by M-Bar Energy I, LLC, the project is currently active in the ERCOT interconnection queue as entry ERCOT-27INR0422, with a queue entry date of December 19, 2024. The proposed commercial operation date is September 18, 2028, and the project is currently in the Facility Study phase of the interconnection process.
The project consists of 82.1 MW of battery storage capacity. The point of interconnection is the 1141 Holt Switch Substation at 138 kV.
Generated from interconnection queue and public data sources
State
TX
County
Ector
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
M-Bar Energy I, LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
1141 Holt Switch Substation 138 kV
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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