Zeppelin Energy Storage

ERCOT-26INR0083BetaActiveBatteryERCOTLBNL + Live

163.93 MW storage in Tom Green, TX · In queue since January 2023 · Proposed COD May 2028

BA: ERCOISO/RTO: ERCOTNERC: TRERC: ERCOT

163.93 MW

Capacity

Components

Battery

3y 6m

In Queue

Facility Study

IA Phase

COD target: 2028

Interconnection

Total Duration

5y 4m

Facilities Study50%

Queue EntryJan 30, 2023

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: 2028-05-31

Cross-source intelligence

Beta

Medium confidence·5 sources·as of 2026-06-01

Expected COD

2028-05-31

From queue filing

Developer

Peregrine Energy

Filed as ZEPPELIN ENERGY STORAGE LLC

Status

Active

Active — tax abatement approved March 2025, project in Facility Study phase, no construction start announced

Financing

In progress

$160 million project investment, tax abatement approved March 2025, financing close not yet announced

Key milestones

Permit approvedMar 18, 2025

San Angelo City Council approved three-year tax abatement (up to 85%) for $160M battery storage facility

source

COD targetMay 31, 2028Most recent

Proposed commercial operation date updated from Feb 2026 to May 2028

source

About

The proposed Zeppelin Energy Storage project is a 163.93 MW battery storage development in Tom Green County, Texas. The project, being developed by Zeppelin Energy Storage LLC, is interconnected within the ERCOT region under queue ID ERCOT-26INR0083. It entered the interconnection queue on January 30, 2023, with a proposed commercial operation date of May 31, 2028. The project's interconnection status is currently in the Facility Study phase.

The Zeppelin Energy Storage project has been featured in recent news coverage.

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

Tom Green

Grid Region

ERCOT (Texas)

Market

ISO/RTO Member

Developer

ZEPPELIN ENERGY STORAGE LLC

Utility

—

Entity

ERCOT

Service Type

—

Point of Interconnection

6464 San Angelo North

Data Source

LBNL + Live

DeveloperZeppelin Energy Storage, LLCSan Angelo LIVE! · 2025-03-18

TransactionProject financingSan Angelo LIVE! · 2025-03-18

Deal value$160.0MSan Angelo LIVE! · 2025-03-18

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.

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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_WEST
Hub Confidence: MEDIUM
POI Substation: San Angelo North 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.

Insights & Articles (1)Beta

Last updated 2026-03-26

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InfraSure platform

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

Zeppelin Energy Storage (ERCOT-26INR0083) — Project Summary

Zeppelin Energy Storage