TEP-146
175 MW storage in Pima, AZ · In queue since December 2022 · Proposed COD December 2026
175 MW
Capacity
1
Components
Battery
3y 7m
In Queue
—
IA Status
COD target: 2026
Total Duration
4 years
Interconnection request submitted to ISO/RTO
Project undergoes interconnection studies to assess grid impact.
Typical: 18–36 months
Interconnection agreement not yet executed
Typical: 30–60 days (negotiation)
Proposed COD: 2026-12-01
TEP-146 is a proposed 175 MW battery storage project located in Pima County, Arizona. The project, under development by Tucson Electric Power Company (TEP), consists of a single 175 MW battery component. It is currently active in the Tucson Electric Power (TEP) interconnection queue with an entry date of December 19, 2022, and a proposed commercial operation date of December 1, 2026. The point of interconnection is the Spanish Trail 138kV Substation.
The project is located in the Western region of the United States. As of the current data, the project does not have an interconnection agreement (IA) in place and has appeared in recent news coverage.
Generated from interconnection queue and public data sources
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.
See the full development-risk decomposition for this project.
State
AZ
County
Pima
Grid Region
Mountain West
Market
—
Developer
—
Utility
Tucson Electric Power Company
Entity
TEP
Service Type
NRIS
Point of Interconnection
Spanish Trail 138kV Substation
Data Source
LBNL
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.
See the full risk decomposition + scenarios for this project.
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.
See the full forecast + scenario decomposition for this project.
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.
See the full revenue + DSCR projection for this project.
- 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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Ask about Project TEP-146Forward forecasts, scenario decomposition, and risk-decision tooling for this queue project.
