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1779.2 MW Conventional Steam Coal (1766 MW) + Solar Photovoltaic (13 MW) operating in Apache, AZ — Tucson Electric Power Company
1,779.2 MW
Nameplate Capacity
7
Generators
units
Hybrid (2)
Technology
Conventional Steam Coal + Solar Photovoltaic
1985
Operating Since
Coordinates
34.3186, -109.1639
County
Apache, AZ
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Tucson Electric Power Co | Tucson Electric Power | — |
| Owner(s) | Salt River Project, Springerville Unit 3 Holding LLC, Tucson Electric Power Co | Fortis | — |
| Status | Operating | operating | — |
Springerville Generating Station is a coal-fired power plant in Springerville, Arizona. It is owned by Tucson Electric Power (TEP) and has a generating capacity of 1765.8 MW. TEP announced in 2025 that it plans to switch the plant to a natural gas plant by 2030.
Read more on WikipediaThe Springerville Generating Station is a 1779.2 MW hybrid power plant located in Apache County, Arizona. The plant, which began operating in 1985, is owned by Fortis, a Canadian company, and operated by Tucson Electric Power Co. The primary fuel source is subbituminous coal (SUB), and the plant utilizes conventional steam coal technology in addition to solar photovoltaic generation. It is tracked as one of two plants in the state, and ranks 13th out of 75 plants nationally.
The Springerville plant operates within the Tucson Electric Power Company balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. The latest annual generation data indicates an output of 5,549,274 MWh, resulting in a capacity factor of 35.6%. Financial data is available for the plant, sourced from lbnl_solar. The solar component of the plant uses a fixed tilt tracking system.
Generated from EIA, GEM, and public data sources
Grid Region
Mountain West
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
Tucson Electric Power Company (TEPC)
Grid Voltage
345.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility
628.9K MWh
Latest Month
5.5M MWh
Annual Generation
35.6%
Capacity Factor
CO₂ Intensity
2281 lb/MWh
NOx
1 lb/MWh
SO₂
2 lb/MWh
CH₄
0.266 lb/MWh
N₂O
0.039 lb/MWh
Capacity Factor
43.2%
Annual Net Gen
6734 GWh
CO₂eq
2299 lb/MWh
Subregion
WECC Southwest
Data from 2014–2024
$15.7/MWh
Energy Value
$15.4/MWh
Capacity Value
This plant's balancing authority participates in CAISO's Western Energy Imbalance Market (WEIM). Direct nodal pricing data is not yet available.
Last updated 2026-03-21
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