TEP-166
485 MW hybrid in Graham, AZ · In queue since April 2024 · Proposed COD February 2028
485 MW
Capacity
1
Components
Solar
2y 1m
In Queue
—
IA Status
COD target: 2028
Total Duration
3y 10m
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: 2028-02-01
TEP-166 is a proposed 485 MW hybrid solar and battery energy storage project located in Graham County, Arizona. The project, under development by Tucson Electric Power Company (TEP), consists of 485 MW of solar photovoltaic generation. It is currently listed as active in the TEP interconnection queue, with an entry date of April 17, 2024, and a proposed commercial operation date of February 1, 2028. The point of interconnection is the Greenlee-Winchester 345kV Transmission Line.
Generated from interconnection queue and public data sources
State
AZ
County
Graham
Grid Region
Mountain West
Market
—
Developer
—
Utility
Tucson Electric Power Company
Entity
TEP
Service Type
—
Point of Interconnection
Greenlee-Winchester 345kV Transmission Line
Data Source
LBNL
- 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.
