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1636.2 MW Bit. Coal operating in San Juan, NM
1,636.2 MW
Nameplate Capacity
2
Generators
units
Conventional Steam Coal
Technology
1969
Operating Since
Coordinates
36.6900, -108.4814
County
San Juan, NM
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Arizona Public Service Co | Arizona Public Service | — |
| Owner(s) | 4C Acquisition, LLC, Arizona Public Service Co, El Paso Electric Co, Public Service Co of NM, Salt River Project, Tucson Electric Power Co | Pinnacle West Capital | Arizona Public Service |
| Status | Operating | — | — |
The Four Corners Generating Station is a 1,540 megawatt coal-fired power plant located near Fruitland, New Mexico, on property located on the Navajo Nation that is leased from the Navajo Nation government.
Read more on WikipediaThe Four Corners Generating Station is a 1636.2 MW coal-fired power plant located in San Juan County, New Mexico. It began operating in 1969 and is the largest power plant in the state. The plant utilizes conventional steam coal technology and is fueled by bituminous coal (BIT). It consists of two generating units and is operated by Arizona Public Service Co, a subsidiary of Pinnacle West Capital. The plant's balancing authority is the Arizona Public Service Company, and it falls within the Western Electricity Coordinating Council (WECC) NERC region.
In the latest year for which data is available, Four Corners generated 8,239,233 MWh of electricity, achieving a capacity factor of 57.3%. The plant's installed cost was $843.5 per kW, according to FERC data. Four Corners ranks 15th out of 50 coal plants nationally. News coverage of the plant includes 7 articles related to industry topics, 2 on regulatory matters, and 1 concerning hazards.
Generated from EIA, GEM, and public data sources
Grid Region
Mountain West
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
Arizona Public Service Company (AZPS)
Grid Voltage
500.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility
Monthly net generation as reported to EIA-923 — useful for historical context. Confidence varies sharply by fuel type; the band above and the “About this data” button explain the caveats specific to this plant and how InfraSure’s in-house model handles them.
922.8K MWh
Latest Month
8.2M MWh
Annual Generation
57.3%
Capacity Factor
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CO₂ Intensity
2112 lb/MWh
NOx
0.702 lb/MWh
SO₂
0.488 lb/MWh
CH₄
0.241 lb/MWh
N₂O
0.035 lb/MWh
Capacity Factor
51.9%
Annual Net Gen
7435 GWh
CO₂eq
2128 lb/MWh
Subregion
WECC Southwest
Steam turbine · Tucson Electric Power Company · Data from 2015–2024
$1,863/kW
Installed Cost
$57/kW
Annual CapEx
$56.2/MWh
Operating Cost
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
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This plant's balancing authority participates in CAISO's Western Energy Imbalance Market (WEIM). Direct nodal pricing data is not yet available.
No wholesale contracts disclosed in FERC EQR for this plant.
FERC EQR captures bilateral wholesale energy + capacity contracts ≥$1M/yr filed quarterly by jurisdictional sellers — covers renewable PPAs, thermal energy sales agreements, capacity contracts, and tolling agreements alike. Many plants don't appear: regulated-utility output flows to ratepayers via cost-of-service rather than bilateral contracts; small projects fall below the filing threshold; tax-equity-financed renewables route offtake to investors not utilities; merchant plants sell into ISO clearing markets without bilateral contracts. News-extracted buyer facts (below) may surface contracts disclosed only through announcements.
Last updated 2026-03-26
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