Lupinus Storage 3
50.9 MW storage in Franklin, TX · In queue since September 2023 · Proposed COD September 2026
50.9 MW
Capacity
1
Components
Battery
2y 8m
In Queue
Facility Study
IA Status
COD target: 2026
Total Duration
3 years
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: 2026-09-21
Lupinus Storage 3 is a proposed 50.9 MW battery storage project located in Franklin County, Texas. The developer is Lupinus Solar 2, LLC. The project is interconnected within the ERCOT region and entered the interconnection queue as ERCOT-24INR0490 on September 23, 2023. Its proposed commercial operation date is September 21, 2026, and its interconnection agreement status is currently in the Facility Study phase.
The proposed project is linked to the existing Lupinus Storage 3 operating plant (EIA ID 67674). The point of interconnection is the 1794 Monticello Tap Substation 138 kV. The project has appeared in recent news coverage.
Generated from interconnection queue and public data sources
State
TX
County
Franklin
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Lupinus Solar 2, LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
1794 Monticello Tap Substation 138 kV
Data Source
LBNL
- 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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