Elio BESS
317.2 MW storage in Brazoria, TX · In queue since July 2022 · Proposed COD August 2027
317.2 MW
Capacity
1
Components
Battery
3y 10m
In Queue
IA Executed
IA Status
Signed Sep 2024
Queue → IA
2y 2m
IA → COD
2y 11m
Total Duration
2y 2m
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: 2027-08-05
The Elio BESS project is a proposed 317.2 MW battery storage project located in Brazoria County, Texas. Developed by Elio Energy LLC, the project consists entirely of battery storage. It is listed in the ERCOT interconnection queue as entry ERCOT-25INR0103, with a queue entry date of July 5, 2022, and a proposed commercial operation date of August 5, 2027. The project's interconnection agreement has been executed as of September 15, 2024.
The proposed project is linked to the existing Elio Energy LLC operating plant (EIA ID 65850). The Elio BESS project has been the subject of recent news coverage.
Generated from interconnection queue and public data sources
State
TX
County
Brazoria
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Elio Energy LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
Tap 138kV 42980 Nash - 44010 Wa Parish circuit 02
Data Source
LBNL + Live
- ISO / RTO
- ERCOT
- Trading Hub
- HB_HOUSTON
- Hub Confidence
- HIGH
- Nearest Node (Estimated)
- RN_LNP_SLR
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 2026-03-14
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