Four CornersRetirement planned
San Juan County, New Mexico · EIA plant ID 2442 · Operator: Arizona Public Service Co
Nameplate1,636MWSummer 1,540 MW
Generators2in service
Net generation9,432GWh12 mo to Aug 2026
Capacity factor70%gas/coal/oil units, summer MW
Heat rate9,935Btu/kWhfossil units, electric fuel, HHV
First online1969Runs as baseload
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), gas/coal/oil units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 15,061.4 | 84.3% | 10,117 |
| 2002 | 12,914.2 | 72.3% | 10,202 |
| 2003 | 15,678.9 | 87.7% | 10,140 |
| 2004 | 14,987.2 | 83.6% | 10,218 |
| 2005 | 15,616 | 86.5% | 10,143 |
| 2006 | 15,969.2 | 88.5% | 10,177 |
| 2007 | 14,597.3 | 80.9% | 10,198 |
| 2008 | 14,683.7 | 81.2% | 10,070 |
| 2009 | 15,639.5 | 85.8% | 10,056 |
| 2010 | 13,904.8 | 75.6% | 10,083 |
| 2011 | 14,054.5 | 76.4% | 10,209 |
| 2012 | 13,741.4 | 74.5% | 10,266 |
| 2013 | 12,269.3 | 68.2% | 10,301 |
| 2014 | 8,729.3 | 64.7% | 9,903 |
| 2015 | 10,172.3 | 75.4% | 9,756 |
| 2016 | 6,873.3 | 50.8% | 9,930 |
| 2017 | 6,522.7 | 48.4% | 10,029 |
| 2018 | 7,508.8 | 55.7% | 9,271 |
| 2019 | 8,917.3 | 66.1% | 9,639 |
| 2020 | 7,599 | 56.2% | 10,244 |
| 2021 | 7,904.4 | 58.6% | 9,998 |
| 2022 | 10,310.3 | 76.4% | 9,880 |
| 2023 | 7,434.9 | 55.1% | 10,006 |
| 2024 | 8,493.4 | 62.8% | 10,010 |
| 2025 | 8,239.2 | 61.1% | 9,901 |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| 4 | Conventional Steam Coal | ST | 818.1 | 770 | Jul 1969 | Operating · retirement planned | Dec 2031 | coming soon |
| 5 | Conventional Steam Coal | ST | 818.1 | 770 | Jul 1970 | Operating · retirement planned | Dec 2031 | coming soon |
| 1 | Conventional Steam Coal | ST | 190 | 170 | May 1963 | Retired Dec 2013 | — | coming soon |
| 2 | Conventional Steam Coal | ST | 190 | 170 | Jun 1963 | Retired Dec 2013 | — | coming soon |
| 3 | Conventional Steam Coal | ST | 253.4 | 220 | Aug 1964 | Retired Dec 2013 | — | coming soon |
Owner / operator
Operator: Arizona Public Service Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Arizona Public Service Co | 63.0% | 1,031 MW |
| Public Service Co of NM | 13.0% | 213 MW |
| Salt River Project | 10.0% | 164 MW |
| Tucson Electric Power Co | 7.0% | 115 MW |
| 4C Acquisition, LLC | 3.5% | 57 MW |
| El Paso Electric Co | 3.5% | 57 MW |
Nearby plants
Within 80 km.
| NTEC Gas Plant | — | 2.9 km |
| San Juan | retired | 12.9 km |
| Rockmont Solar and Storage Project | — | 13.5 km |
| Westside - (NM) | — | 16.4 km |
| San Juan Solar I | 300 MW | 20.5 km |
| Bluffview | 86 MW | 23.9 km |