Grand Mesa BESS
255.6 MW storage in Pecos, TX · In queue since August 2024 · Proposed COD September 2027
255.6 MW
Capacity
1
Components
Battery
1y 9m
In Queue
Facility Study
IA Status
COD target: 2027
Total Duration
3y 1m
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: 2027-09-28
The Grand Mesa BESS is a proposed 255.6 MW battery storage project located in Pecos County, Texas. Developed by PERRY GREEN POWER LLC, the project is currently active in the ERCOT interconnection queue as entry ERCOT-26INR0550, with a queue entry date of August 16, 2024. The proposed commercial operation date is September 28, 2027, and the project's interconnection agreement status is currently in the Facility Study phase.
The project consists of 255.6 MW of battery storage capacity. It is planned to connect to the 76582 MESA VIEW SWITCH 138kV point of interconnection. The Grand Mesa BESS project has appeared in recent news coverage regarding energy storage developments in Texas.
Generated from interconnection queue and public data sources
State
TX
County
Pecos
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
PERRY GREEN POWER LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
76582 MESA VIEW SWITCH 138kV
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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