Two Barbaras BESS (ERCOT-27INR0109) — Project Summary

Queue ID
ERCOT-27INR0109
Capacity
217.16 MW
Technology
Battery
Status
active
Location
Montgomery, TX
Region
ERCOT
Developer
Two Barbaras BESS
IA Status
IA Executed

Two Barbaras BESS

ERCOT-27INR0109BetaActiveBatteryERCOTLBNL + Live

217.16 MW storage in Montgomery, TX · In queue since March 2024 · Proposed COD January 2029

BA: ERCOISO/RTO: ERCOTNERC: TRERC: ERCOT

217.16 MW

Capacity

1

Components

Battery

2y 4m

In Queue

IA Executed

IA Phase

Signed Oct 2025

Interconnection

Queue → IA

1y 7m

IA → COD

3y 3m

Total Duration

1y 7m

Construction75%
Queue EntryMar 22, 2024

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 AgreementOct 1, 2025

Interconnection agreement executed — binding commitment to build

Typical: 30–60 days (negotiation)

ConstructionCurrent

Project under construction

Typical: 6–18 months

Commercial Operation

Proposed COD: 2029-01-04

Cross-source intelligence
Beta
Low confidence·0 sources·as of 2026-06-01
Expected COD
2029-01-04
From queue filing
Developer
From queue filing
Status
Active
Active — IA executed October 2025, no public construction timeline announced
Financing
Unannounced
Key milestones
IA executedOct 1, 2025Most recent

Interconnection Agreement executed per LBNL queue data

About

The Two Barbaras BESS project is a proposed 217.16 MW battery storage project located in Montgomery County, Texas. The developer is listed as Two Barbaras BESS. It is currently in the ERCOT interconnection queue as entry ERCOT-27INR0109, with a queue entry date of March 22, 2024, and a proposed commercial operation date of January 4, 2029. The project's interconnection agreement status is currently in the Facility Study phase.

The point of interconnection is the Tap 138 kV Pinehurst (#46240) _x0013_ Mill Creek (#44850) Line. The project has appeared in recent news coverage.

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

Montgomery

Grid Region

ERCOT (Texas)

Market

ISO/RTO Member

Developer

Two Barbaras BESS

Utility

Entity

ERCOT

Service Type

Point of Interconnection

Tap 138 kV Pinehurst (#46240) – Mill Creek (#44850) Line

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.

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InfraSure platform

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