Marcelina Storage
203.21 MW storage in Wilson, TX · In queue since August 2021 · Proposed COD December 2026
203.21 MW
Capacity
1
Components
Battery
4y 9m
In Queue
Facility Study
IA Status
COD target: 2026
Total Duration
5y 4m
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: 2026-12-18
The Marcelina Storage project is a proposed 203.21 MW battery energy storage system located in Wilson County, Texas. The project, developed by Marcelina Solar, LLC, is currently active in the ERCOT interconnection queue as entry ERCOT-23INR0318, with a queue entry date of August 9, 2021.
The project's proposed commercial operation date is December 18, 2026. Its interconnection agreement status is currently in the Facility Study phase. The point of interconnection is Tap 345 kV 5133 Elm Creek - 5901 San Miguel.
Generated from interconnection queue and public data sources
State
TX
County
Wilson
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Marcelina Solar, LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
Tap 345 kV 5133 Elm Creek - 5901 San Miguel
Data Source
LBNL + Live
- ISO / RTO
- ERCOT
- Trading Hub
- HB_NORTH
- Hub Confidence
- MEDIUM
- POI Substation
- Elm Creek 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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