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107.8 MW Natural Gas operating in Pima, AZ — Tucson Electric Power Company
107.8 MW
Nameplate Capacity
4
Generators
units
Natural Gas Fired Combustion Turbine
Technology
1972
Operating Since
Coordinates
32.4010, -111.1262
County
Pima, AZ
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Tucson Electric Power Co | Tucson Electric Power | — |
| Owner(s) | Tucson Electric Power Co | Fortis | — |
| Status | Operating | — | — |
The North Loop power plant is located in Pima County, Arizona. The plant has a total capacity of 107.8 MW across four natural gas-fired combustion turbine generators. It began operating in 1972. The plant is owned by Fortis, a Canadian company, and operated by Tucson Electric Power Co. North Loop is ranked 26th out of 26 power plants in Arizona and 919th out of 945 plants nationally.
In the most recent year with available data, North Loop generated 2,456 MWh, resulting in a capacity factor of 0.3%. The plant operates within the Tucson Electric Power Company balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. Financial data indicates an installed cost of $304.63 per kW, based on FERC data.
Generated from EIA, GEM, and public data sources
Grid Region
Mountain West
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
197 MWh
Latest Month
2.5K MWh
Annual Generation
0.3%
Capacity Factor
CO₂ Intensity
2545 lb/MWh
Low-utilization plant — per-MWh rate is dominated by startup/standby emissions; not directly comparable to baseload averages.
NOx
7 lb/MWh
SO₂
Gas turbine · Tucson Electric Power Company · Data from 2015–2024
$476/kW
Installed Cost
$36/kW
Annual CapEx
$349.2/MWh
Operating Cost
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
This plant's balancing authority participates in CAISO's Western Energy Imbalance Market (WEIM). Direct nodal pricing data is not yet available.
Last updated 2026-03-26
View all articlesNo ask pi reports yet for this entity.
ask pi about North LoopTucson Electric Power Company (TEPC)
Grid Voltage
46.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility
0.070 lb/MWh
CH₄
0.049 lb/MWh
N₂O
0.005 lb/MWh
Capacity Factor
0.4%
Annual Net Gen
4 GWh
CO₂eq
2547 lb/MWh
Subregion
WECC Southwest