Outer Loop BESS
201.2 MW storage in Harris, TX · In queue since September 2021 · Proposed COD December 2027
201.2 MW
Capacity
1
Components
Battery
4y 8m
In Queue
Facility Study
IA Status
COD target: 2027
Total Duration
6y 3m
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: 2027-12-06
The Outer Loop BESS is a proposed 201.2 MW battery storage project located in Harris County, Texas. Developed by Black Mountain Energy Storage II, the project is interconnected within the ERCOT region under queue ID ERCOT-23INR0382. It entered the interconnection queue on September 29, 2021, and has a proposed commercial operation date of December 6, 2027. The project's interconnection status is currently in the Facility Study phase.
The Outer Loop BESS development has been the subject of recent news coverage.
Generated from interconnection queue and public data sources
State
TX
County
Harris
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Black Mountain Energy Storage II
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
40700 Greens Bayou 345kV
Data Source
LBNL + Live
- ISO / RTO
- ERCOT
- Trading Hub
- HB_HOUSTON
- Hub Confidence
- MEDIUM
- Nearest Node (Estimated)
- GBY_GT
- POI Substation
- Greens Bayou 345kV 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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