Shepard Energy Storage (ERCOT-25INR0262) — Project Summary

Queue ID
ERCOT-25INR0262
Capacity
256.79 MW
Technology
Battery
Status
active
Location
Galveston, TX
Region
ERCOT
Developer
Shepard Energy Storage LLC
IA Status
IA Executed

Shepard Energy Storage

ERCOT-25INR0262BetaActiveBatteryERCOTLBNL + Live

256.79 MW storage in Galveston, TX · In queue since December 2022 · Proposed COD July 2027

BA: ERCOISO/RTO: ERCOTNERC: TRERC: ERCOT

256.79 MW

Capacity

1

Components

Battery

3y 7m

In Queue

IA Executed

IA Phase

Signed Jan 2024

Interconnection

Queue → IA

1y 1m

IA → COD

3y 6m

Total Duration

1y 1m

Construction75%
Queue EntryDec 15, 2022

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 AgreementJan 17, 2024

Interconnection agreement executed — binding commitment to build

Typical: 30–60 days (negotiation)

ConstructionCurrent

Project under construction

Typical: 6–18 months

Commercial Operation

Proposed COD: 2027-07-01

Cross-source intelligence
Beta
Medium confidence·4 sources·as of 2026-06-01
Expected COD
2027-07-01
From queue filing
Developer
Vesper Energy
Filed as Shepard Energy Storage LLC
Status
IA Executed
IA Executed — community engagement ongoing, October 2024 open house held in Dickinson, TX
Financing
Unannounced
Key milestones
IA executedJan 17, 2024

Interconnection Agreement executed with ERCOT

source
COD targetJul 1, 2027Most recent

Proposed commercial operation date per LBNL queue

source
About

Shepard Energy Storage is a proposed 260.22 MW battery storage project located in Galveston County, Texas. The project, developed by Shepard Energy Storage LLC, is interconnected within the ERCOT region under queue ID ERCOT-25INR0262. It entered the interconnection queue on December 15, 2022, with a proposed commercial operation date of July 1, 2027. The project's Interconnection Agreement (IA) was executed on January 17, 2024.

The proposed project consists entirely of battery storage with a total capacity of 260.22 MW. The point of interconnection is the Hidden Lakes 138kV substation (Bus# 38900). Shepard Energy Storage has been the subject of recent news coverage, with three articles categorized under the industry sector.

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

Galveston

Grid Region

ERCOT (Texas)

Market

ISO/RTO Member

Developer

Shepard Energy Storage LLC

Utility

Entity

ERCOT

Service Type

Point of Interconnection

Hidden Lakes 138kV substation (Bus# 38900)

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_WEST
Hub Confidence
MEDIUM
POI Substation
Substation 41

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