Nautilus Heavy Storage
256.24 MW storage in San Patricio, TX · In queue since December 2023 · Proposed COD January 2030
256.24 MW
Capacity
1
Components
Battery
2y 5m
In Queue
Facility Study
IA Status
COD target: 2030
Total Duration
6y 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: 2030-01-30
The Nautilus Heavy Storage project is a proposed 256.24 MW battery storage project located in San Patricio County, Texas. Developed by Nautilus Heavy Storage, LLC, the project is currently active in the ERCOT interconnection queue as entry ERCOT-26INR0306, with a queue entry date of December 20, 2023. The proposed commercial operation date is January 30, 2030, and the project's interconnection agreement status is currently in the Facility Study phase.
The project consists entirely of battery storage, with a total capacity of 256.24 MW. The point of interconnection is the 8422 Dupont 138kV location. The Nautilus Heavy Storage project has appeared in recent news coverage regarding energy storage developments in Texas.
Generated from interconnection queue and public data sources
State
TX
County
San Patricio
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Nautilus Heavy Storage, LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
8422 Dupont 138kV
Data Source
LBNL + Live
- ISO / RTO
- ERCOT
- Trading Hub
- HB_SOUTH
- Hub Confidence
- MEDIUM
- Nearest Node (Estimated)
- LGE_CC1
- POI Substation
- Dupont Switching Station
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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