APS-Q518

APS-Q518BetaActiveBatteryAPSLBNL

70 MW storage in Yuma, AZ · In queue since March 2023 · Proposed COD April 2023

BA: AZPSNERC: WECCRC: SPPW

70 MW

Capacity

Components

Battery

3y 4m

In Queue

Facility Study

IA Phase

COD target: 2023

Interconnection

Total Duration

1 month

Schedule

40 months past proposed COD

Facilities Study50%

Queue EntryMar 30, 2023

Interconnection request submitted to ISO/RTO

Interconnection StudyCurrent

Project undergoes interconnection studies to assess grid impact.

Typical: 18–36 months

Interconnection Agreement

Interconnection agreement not yet executed

Typical: 30–60 days (negotiation)

Commercial Operation

Proposed COD: 2023-04-01

About

APS-Q518 is a proposed 70 MW battery storage project located in Yuma County, Arizona. The project, under development by Arizona Public Service (APS), entered the Arizona Public Service interconnection queue on March 30, 2023, with a proposed commercial operation date of April 1, 2023. Its interconnection status is currently in the Cluster Study phase.

The project consists solely of battery storage, with a total capacity of 70 MW. The point of interconnection is the Desert Sands Substation. The project has appeared in recent news coverage regarding energy storage development in the region.

Generated from interconnection queue and public data sources

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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P(COD by stated date)

Withdrawal probability vs cohort

IA cluster risk

Project Details

State

County

Yuma

Grid Region

Mountain West

Market

—

Developer

—

Utility

Arizona Public Service

Entity

APS

Service Type

NRIS

Point of Interconnection

Desert Sands Substation

Data Source

LBNL

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.

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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.

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See the full revenue + DSCR projection for this project.

Revenue conditioned on COD

Financing close risk

Cohort DSCR comparison

Market Context

Approximate

ISO / RTO: MOUNTAIN_WEST
Trading Hub: PALOVERDE
Hub Confidence: UNKNOWN

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.

Project APS-Q518 — Project Summary

APS-Q518