Ramsey Storage
510.4 MW storage in Wharton, TX · In queue since May 2020 · Proposed COD December 2027
510.4 MW
Capacity
1
Components
Battery
6 years
In Queue
IA Executed
IA Status
Signed Aug 2022
Queue → IA
2y 3m
IA → COD
5y 4m
Total Duration
2y 3m
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 executed — binding commitment to build
Typical: 30–60 days (negotiation)
Project under construction
Typical: 6–18 months
Proposed COD: 2027-12-31
The Ramsey Storage project is a proposed 510.4 MW battery storage project located in Wharton County, Texas. The developer is Hecate Energy Ramsey Storage LLC. It is interconnected within the ERCOT region under queue ID ERCOT-21INR0505, with a queue entry date of May 20, 2020, and a proposed commercial operation date of December 31, 2027. The project's Interconnection Agreement (IA) was executed on August 11, 2022.
The project is linked to the existing Hecate Energy Ramsey Storage operating plant (EIA ID 66414). The Ramsey Storage project has been mentioned in recent news coverage.
Generated from interconnection queue and public data sources
State
TX
County
Wharton
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Hecate Energy Ramsey Storage LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
44200 Hillje 345kV
Data Source
LBNL + Live
- ISO / RTO
- ERCOT
- Trading Hub
- HB_HOUSTON
- Hub Confidence
- HIGH
- POI Substation
- Hillje 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.
