Outpost Storage

ERCOT-23INR0209BetaActiveBatteryBatteryERCOTLBNL + Live

508.1 MW generation in Webb, TX · In queue since March 2021 · Proposed COD March 2028

BA: ERCOISO/RTO: ERCOTNERC: TRERC: ERCOT

508.1 MW

Capacity

Components

Battery

5y 4m

In Queue

Facility Study

IA Phase

COD target: 2028

Interconnection

Total Duration

7 years

Facilities Study50%

Queue EntryMar 1, 2021

Interconnection request submitted to ISO/RTO

Interconnection StudyCurrent

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

Typical: 18–30 months (fastest major ISO)

Interconnection Agreement

Interconnection agreement not yet executed

Typical: 30–60 days (negotiation)

Commercial Operation

Proposed COD: 2028-03-01

Cross-source intelligence

Beta

High confidence·8 sources·as of 2026-06-01

Expected COD

Sep 2025

Queue date 3+ years staleQueue: 2028-03-01

Developer

Repsol

Recent ownership change

Status

Online

Online — Solar component (629 MW) operational since September 2025; storage component (508 MW) remains in development per LBNL queue

Financing

Secured

Stonepeak acquired 43.8% stake for $252.5M in December 2025, implying $775M total asset valuation. Transaction closed per press releases.

Ownership history

—·Hecate Energy Outpost Storage LLC→Repsol (100%)source
2025-12·Repsol (100%)→Repsol (56.2%) + Stonepeak (43.8%)source

Key milestones

COD targetSep 2025

Outpost Solar (629 MW) commenced commercial operations in Webb County, Texas

source

Ownership changeDec 2025Most recent

Stonepeak acquired 43.8% stake in Outpost project for $252.5M

source

About

The Outpost Storage project is a proposed 508.1 MW battery energy storage system in Webb County, Texas. The project, developed by Hecate Energy Outpost Storage LLC, is currently in the ERCOT interconnection queue as entry ERCOT-23INR0209, with a queue entry date of March 1, 2021. Its proposed commercial operation date is March 1, 2028.

The project's interconnection status is currently in the Facility Study phase. The point of interconnection is the Tap 345kV 80219 Lobo - 5709 Fowlerton. The project has appeared in recent news.

Generated from interconnection queue and public data sources

ERCOT Queue

Development Risk

Realization risk before commercial operation — cluster-study clearance, IA timing, counterparty mix, and withdrawal probability vs cohort. The diligence view that determines whether this project is worth pursuing. 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)

Withdrawal probability vs cohort

IA cluster risk

Project Details

State

County

Webb

Grid Region

ERCOT (Texas)

Market

ISO/RTO Member

Developer

Hecate Energy Outpost Storage LLC

Utility

—

Entity

ERCOT

Service Type

—

Point of Interconnection

Tap 345kV 80219 Lobo - 5709 Fowlerton

Data Source

LBNL + Live

Risk Analytics

Composite operating-phase risk view — what this asset's risk profile would look like once it reaches commercial operation. 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 — what this project would produce assuming it reaches commercial operation. Probabilistic ranges (P10/P50/P90) across weather, demand, and policy scenarios, conditioned on the proposed COD. Powered by InfraSure's generation modeling stack.

Available on the InfraSure platform

See the full forecast + scenario decomposition for this project.

P50 conditioned on COD

Capacity factor vs cohort

Weather + policy scenarios

Financial Forecast

Forward revenue, DSCR projection, and financing-close risk — conditioned on commercial operation. The bankability view that determines whether the deal clears its covenants once online. Powered by InfraSure's asset cashflow stack.

Available on the InfraSure platform

See the full revenue + DSCR projection for this project.

Revenue conditioned on COD

Financing close risk

Cohort DSCR comparison

Market Context

Approximate

ISO / RTO: ERCOT
Trading Hub: HB_SOUTH
Hub Confidence: MEDIUM
Nearest Node (Estimated): WFTANK_ESS1
POI Substation: Lobo Substation

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.

Ask Reports (1)

Analysis

Compare Texas vs California solar

Summary analysis with parallel narrative sections and visualizations.

Apr 18View report →

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InfraSure platform

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

Outpost Storage (ERCOT-23INR0209) — Project Summary

Outpost Storage