Alexandrite Storage
203 MW storage in Cameron, TX · In queue since June 2022 · Proposed COD December 2026
203 MW
Capacity
1
Components
Battery
3y 11m
In Queue
Facility Study
IA Status
COD target: 2026
Total Duration
4y 6m
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: 2026-12-10
The Alexandrite Storage project is a proposed 203 MW battery energy storage system in Cameron County, Texas. Developed by Johnson Energy Storage, LLC, the project entered the ERCOT interconnection queue as entry ERCOT-24INR0381 on June 27, 2022. Its proposed commercial operation date is December 10, 2026.
The project's interconnection status is currently in the Facility Study phase. The point of interconnection is the 8359 Santa Rosa (S_SNROSA4A) 138kV substation. The Alexandrite Storage project has appeared in recent news coverage.
Generated from interconnection queue and public data sources
State
TX
County
Cameron
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Johnson Energy Storage, LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
8359 Santa Rosa (S_SNROSA4A) 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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