Althea Storage
251.3 MW storage in Maverick, TX · Proposed COD September 2028
251.3 MW
Capacity
1
Components
Battery
—
In Queue
Facility Study
IA Status
COD target: 2028
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: 2028-09-21
The Althea Storage project is a proposed 251.3 MW battery energy storage system in Maverick County, Texas. The project, developed by Althea Storage LLC, is currently active in the ERCOT interconnection queue as entry ERCOT-27INR0465. The proposed commercial operation date is September 21, 2028, and the project's interconnection agreement status is currently in the Facility Study phase.
The project consists of 251.3 MW of battery storage capacity. The point of interconnection is at the Tap Escondido (8260) - Brackettville (8252) location. The Althea Storage project has appeared in recent news coverage regarding energy storage development in Texas.
Generated from interconnection queue and public data sources
State
TX
County
Maverick
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Althea Storage LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
Tap Escondido (8260) - Brackettville (8252)
Data Source
LBNL + Live
- ISO / RTO
- ERCOT
- Trading Hub
- HB_WEST
- Hub Confidence
- MEDIUM
- POI Substation
- Río Escondido
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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