Evelyn Battery Energy Storage System
221.3 MW storage in Galveston, TX · In queue since January 2023 · Proposed COD June 2025
221.3 MW
Capacity
1
Components
Battery
3y 4m
In Queue
IA Executed
IA Status
Signed Sep 2023
Queue → IA
8 months
IA → COD
1y 9m
Total Duration
8 months
Schedule
10 months past proposed COD
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: 2025-06-30
The Evelyn Battery Energy Storage System is a proposed 221.3 MW battery storage project located in Galveston County, Texas. The project, developed by Evelyn Energy Storage LLC, is interconnected within the ERCOT region under queue ID ERCOT-24INR0460. It entered the interconnection queue on January 3, 2023, with a proposed commercial operation date of June 30, 2025.
The project's Interconnection Agreement (IA) was executed on September 14, 2023. Recent news coverage indicates activity related to deals involving the project.
Generated from interconnection queue and public data sources
State
TX
County
Galveston
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Evelyn Energy Storage LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
Hidden Lakes 138kV (38900)
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.
Last updated 2026-03-26
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