Maleza Storage (ERCOT-21INR0456) — Project Summary

Queue ID
ERCOT-21INR0456
Capacity
150.83 MW
Technology
Solar+Battery
Status
active
Location
Wharton, TX
Region
ERCOT
Developer
Brush Storage, LLC
IA Status
Facility Study

Maleza Storage

ERCOT-21INR0456BetaActiveBatteryBatteryERCOTLBNL + Live

150.83 MW generation in Wharton, TX · In queue since October 2019 · Proposed COD December 2028

BA: ERCOISO/RTO: ERCOTNERC: TRERC: ERCOT

150.83 MW

Capacity

1

Components

Battery

6y 9m

In Queue

Facility Study

IA Phase

COD target: 2028

Interconnection

Total Duration

9y 2m

Facilities Study50%
Queue EntryOct 31, 2019

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: 2028-12-31

Cross-source intelligence
Beta
Medium confidence·4 sources·as of 2026-06-01
Expected COD
2028
From queue filing
Developer
Sunchase Power
Recent ownership change
Status
Active
Active — Facility Study phase, no IA executed. Sister project Maleza Storage II (256 MW) signed IA in April 2026, suggesting original Maleza Storage may advance similarly.
Financing
Unannounced
Ownership history
  1. 2022-08·Borrego→ECP (energy transition investor)source
  2. —·Brush Storage, LLC (original filing entity)→Sunchase Power (current operator)source
Key milestones
Ownership changeAug 2022

Borrego completed sale of development business (including storage projects) to ECP

source
IA executedApr 2026Most recent

Sister project Maleza Storage II (256 MW) signed ERCOT interconnection agreement under Sunchase Power

source
About

The Maleza Storage project is a proposed 150.83 MW battery energy storage system in Wharton County, Texas. Developed by Brush Storage, LLC, the project is currently active in the ERCOT interconnection queue as entry ERCOT-21INR0456, with a queue entry date of October 31, 2019. The proposed commercial operation date is December 31, 2028, and its interconnection agreement status is currently in the Facility Study phase.

The project consists solely of battery storage, with a total capacity of 150.83 MW. The point of interconnection is the tap Blue Hillje 345 kv Ckt.#27. The Maleza Storage project has appeared in recent news coverage regarding energy storage developments in Texas.

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.

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See the full development-risk decomposition for this project.

P(COD by stated date)
Withdrawal probability vs cohort
IA cluster risk
Project Details

State

TX

County

Wharton

Grid Region

ERCOT (Texas)

Market

ISO/RTO Member

Developer

Brush Storage, LLC

Utility

—

Entity

ERCOT

Service Type

—

Point of Interconnection

tap Blue – Hillje 345 kv Ckt.#27

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_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.

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InfraSure platform

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