Four Corners
Four Corners is a coal plant in San Juan County, New Mexico, operated by Arizona Public Service Co. No other power plant in New Mexico has more nameplate capacity; the state has 161 in all. Within the Arizona Public Service balancing area it is the largest of 68 plants. Its biggest unit, rated at 818 MW, is the largest single generator in New Mexico. The operator has reported planned retirement dates for 1,636 MW of it, in 2031.
Nameplate capacity, 2025
1,636 MW
1,540 MW net summer capacity
2 operable units
- Coal steam1,636 MW100%
Unit by unit, 1963 to 2025
operating in 2025retiredreported planned retirementbar height follows unit size
Among New Mexico’s plants
Largest plants in the state by nameplate capacity, with the plants ranked next to this one.
- 1Four Cornersthis plant
- 2Hobbs Generating Station682 MW
- 3Luna Energy Facility650 MW
Other rankings
- All US power plants
- 126th of 14,286
- US coal plants
- 41st of 195
- Plants run by Arizona Public Service Co
- 2nd of 21
Operable units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 4 | Coal steam | 818 MW | 770 MW | 1969 | Operating, retirement planned for 2031 |
| 5 | Coal steam | 818 MW | 770 MW | 1970 | Operating, retirement planned for 2031 |
Retired units
Retired capacity here totals 633 MW, mostly coal units.
| Unit | Technology | Nameplate | In service |
|---|---|---|---|
| 1 | Coal steam | 190 MW | 1963–2013 |
| 2 | Coal steam | 190 MW | 1963–2013 |
| 3 | Coal steam | 253 MW | 1964–2013 |
Who owns it
Shares are weighted by the nameplate capacity of each unit an owner holds.
| Owner | Share of capacity |
|---|---|
| Arizona Public Service Co | 63.0% |
| Public Service Co of NM | 13.0% |
| Salt River Project | 10.0% |
| Tucson Electric Power Co | 7.0% |
| 4C Acquisition, LLC | 3.5% |
| El Paso Electric Co | 3.5% |
Grid and site
- Balancing area
- Arizona Public Service
- Reliability region
- Western Electricity Coordinating Council
- Highest grid connection voltage
- 500 kV
- Water source
- SAN JUAN RIVER/MORGAN LAKE
- Nearest town on record
- Fruitland
- Operator type
- Utility
- Coordinates
- 36.690°N, 108.481°W
Closest plants
| Plant | Runs on | Capacity | Distance |
|---|---|---|---|
| San Juan Solar I | Solar | 300 MW | 12.8 mi northeast |
| Bluffview | Natural gas | 85.8 MW | 14.9 mi east |
| Cortez Solar 3, LLC | Solar | 2 MW | 42.8 mi north |
| LPEA Sunnyside Solar 1 Facility | Solar | 1.7 MW | 45.6 mi northeast |
| Cortez Solar 1, LLC | Solar | 2.2 MW | 46.5 mi north |
| Cortez Solar 2, LLC | Solar | 5 MW | 48.1 mi north |
| Navajo Dam | Hydroelectric | 30 MW | 48.7 mi east |
| Williams Ignacio Natural Gas Plant | Other sources | 6.1 MW | 49.7 mi northeast |