Energy City BESS
204.9 MW storage in Midland, TX · In queue since October 2023 · Proposed COD June 2027
204.9 MW
Capacity
1
Components
Battery
2y 7m
In Queue
Facility Study
IA Status
COD target: 2027
Total Duration
3y 8m
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: 2027-06-30
The Energy City BESS project is a proposed 204.9 MW battery storage project located in Midland County, Texas. Developed by Energy City BESS LLC, the project is currently active in the ERCOT interconnection queue as entry ERCOT-26INR0231, with a queue entry date of October 4, 2023. The project's proposed commercial operation date is June 30, 2027, and its interconnection agreement status is currently in the Facility Study phase.
The point of interconnection for the Energy City BESS project is Tap 138kV 1179 Texaco Mabee Tap - 1200 Mariensfield. The project has appeared in recent news coverage regarding energy storage developments in Texas.
Generated from interconnection queue and public data sources
State
TX
County
Midland
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Energy City BESS LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
Tap 138kV 1179 Texaco Mabee Tap - 1200 Mariensfield
Data Source
LBNL + Live
- ISO / RTO
- ERCOT
- Trading Hub
- HB_WEST
- Hub Confidence
- MEDIUM
- POI Substation
- Texaco Mabee 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.
Last updated 2026-03-26
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