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
4 years
In Queue
IA Executed
IA Phase
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
ERCOT Standard Generation Interconnection Agreement executed between CenterPoint Energy Houston Electric and Elio Energy LLC
sourceThe 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
Realization risk from now to commercial operation — financing close, EPC and tax-equity counterparty mix, and COD probability vs the proposed date. The diligence view that determines whether the deal actually closes. Powered by InfraSure's development-stage modeling stack.
See the full development-risk decomposition for this project.
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
Composite operating-phase risk view — what this asset's risk profile will look like once it commissions. Climate hazards across its operating life, expected generation variability, and offtake counterparty exposure, decomposed into a single decision-grade score. Powered by InfraRisk.
See the full risk decomposition + scenarios for this project.
Forward generation outlook — first-year production estimate and 10-year P50 trajectory, with probabilistic ranges (P10/P50/P90) across weather, demand, and policy scenarios. Powered by InfraSure's generation modeling stack.
See the full forecast + scenario decomposition for this project.
Forward revenue, DSCR projection, and financing-close risk — conditioned on commercial operation. First-year DSCR, 10-year cashflow, and counterparty exposure across price and policy scenarios. Powered by InfraSure's asset cashflow stack.
See the full revenue + DSCR projection for this project.
- 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 2026-03-26
View all articlesForward forecasts, scenario decomposition, and risk-decision tooling for this queue project.
