Avalon BESS (ERCOT-26INR0375) — Project Summary

Queue ID
ERCOT-26INR0375
Capacity
522.12 MW
Technology
Battery
Status
active
Location
Fort Bend, TX
Region
ERCOT
Developer
Avalon BESS, LLC
IA Status
IA Executed

Avalon BESS

ERCOT-26INR0375BetaActiveBatteryERCOTLBNL + Live

522.12 MW storage in Fort Bend, TX · In queue since December 2023 · Proposed COD December 2026

BA: ERCOISO/RTO: ERCOTNERC: TRERC: ERCOT

522.12 MW

Capacity

1

Components

Battery

2y 7m

In Queue

IA Executed

IA Phase

Signed Dec 2024

Interconnection

Queue → IA

1 year

IA → COD

2 years

Total Duration

1 year

Construction75%
Queue EntryDec 20, 2023

Interconnection request submitted to ISO/RTO

Interconnection Study

ERCOT uses a serial "connect and manage" approach — fastest among major ISOs.

Typical: 18–30 months (fastest major ISO)

Interconnection AgreementDec 17, 2024

Interconnection agreement executed — binding commitment to build

Typical: 30–60 days (negotiation)

ConstructionCurrent

Project under construction

Typical: 6–18 months

Commercial Operation

Proposed COD: 2026-12-01

Cross-source intelligence
Beta
Medium confidence·3 sources·as of 2026-06-01
Expected COD
2026-12-01
From queue filing
Developer
Greenbelt Renewable Energy
Filed as Avalon BESS, LLC
Status
IA Executed
IA Executed — interconnection agreement signed 2024-12-17, project active in ERCOT queue with 86% build-chance rating per ercotqueue.com
Financing
Unannounced
Key milestones
IA executedDec 17, 2024Most recent

Interconnection Agreement executed with ERCOT

source
About

Avalon BESS is a proposed 522.12 MW battery storage project located in Fort Bend County, Texas. Developed by Avalon BESS, LLC, the project consists entirely of battery storage. It is interconnected within the ERCOT region and entered the interconnection queue as ERCOT-26INR0375 on December 20, 2023. The project's proposed commercial operation date is December 1, 2026, and its Interconnection Agreement (IA) was executed on December 17, 2024.

The point of interconnection (POI) for Avalon BESS is tapping the 345 kV line from Smithers (Bus# 44650) to Bellaire (Bus# 47000). Recent news coverage indicates industry interest in the development.

Generated from interconnection queue and public data sources

Development Risk

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.

Available on the InfraSure platform

See the full development-risk decomposition for this project.

P(COD by stated date)
Financing close probability
EPC + tax-equity counterparty
Project Details

State

TX

County

Fort Bend

Grid Region

ERCOT (Texas)

Market

ISO/RTO Member

Developer

Avalon BESS, LLC

Utility

Entity

ERCOT

Service Type

Point of Interconnection

Tapping the 345 kV Line from Smithers (Bus# 44650) to Bellaire (Bus# 47000).

Data Source

LBNL + Live

Risk Analytics

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.

Available on the InfraSure platform

See the full risk decomposition + scenarios for this project.

Climate hazards (8+)
Generation variability (P10/P50/P90)
Offtake + transmission counterparty
Generation Forecast

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.

Available on the InfraSure platform

See the full forecast + scenario decomposition for this project.

10-year P50 forecast
First-year output estimate
Weather + policy scenarios
Financial Forecast

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.

Available on the InfraSure platform

See the full revenue + DSCR projection for this project.

10-year revenue projection
First-year DSCR
Financing close risk
Market Context
Approximate
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.

No insights available for this project.
InfraSure platform

Forward forecasts, scenario decomposition, and risk-decision tooling for this queue project.