Megamouth Energy Storage (ERCOT-26INR0341) — Project Summary

Queue ID
ERCOT-26INR0341
Capacity
101.3 MW
Technology
Battery
Status
active
Location
Harris, TX
Region
ERCOT
Developer
GCI Megamouth, LLC
IA Status
IA Executed

Megamouth Energy Storage

ERCOT-26INR0341BetaActiveBatteryERCOTLBNL + Live

101.3 MW storage in Harris, TX · In queue since March 2024 · Proposed COD December 2028

BA: ERCOISO/RTO: ERCOTNERC: TRERC: ERCOT

101.3 MW

Capacity

1

Components

Battery

2y 4m

In Queue

IA Executed

IA Phase

Signed Nov 2025

Interconnection

Queue → IA

1y 8m

IA → COD

3y 1m

Total Duration

1y 8m

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 AgreementNov 18, 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: 2028-12-31

Cross-source intelligence
Beta
High confidence·5 sources·as of 2026-06-01
Expected COD
2027
Queue date 1–2 years staleQueue: 2028-12-31
Developer
Banpu Power US
Recent ownership change
Status
Active
Active — acquired by Banpu Power US in March 2026, IA executed November 2025, pre-construction phase
Financing
In progress
Banpu Power announced $90 million investment for acquisition and development per Nikkei Asia March 2026, but construction financing not yet announced
Ownership history
  1. 2026-03·Grid Connected Infrastructure (GCI Megamouth, LLC)→Banpu Power USsource
Key milestones
IA executedNov 18, 2025

Interconnection Agreement executed with ERCOT

source
Ownership changeMar 2026Most recent

Banpu Power US acquired 100 MW Megamouth BESS project from Grid Connected Infrastructure for $90M investment

source
About

The proposed Megamouth Energy Storage project is a 101.3 MW battery storage facility located in Harris County, Texas. Developed by GCI Megamouth, LLC, the project entered the ERCOT interconnection queue as ERCOT-26INR0341 on March 22, 2024. The current proposed commercial operation date is December 31, 2028.

The project's interconnection status is currently in the Facility Study phase. The point of interconnection is the 42750 Mykawa 138 kV location. The project has appeared in recent news.

Generated from interconnection queue and public data sources

ERCOT Queue
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

Harris

Grid Region

ERCOT (Texas)

Market

ISO/RTO Member

Developer

GCI Megamouth, LLC

Utility

—

Entity

ERCOT

Service Type

—

Point of Interconnection

42750 Mykawa 138 kV

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.

No Ask reports yet for this entity.

Ask about Megamouth Energy Storage
InfraSure platform

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