Four Corners
Coal power plant · San Juan County, New Mexico
Details
- Primary fuel
- Coal
- Technology
- Conventional Steam Coal
- Operator
- Arizona Public Service Co
- County
- San Juan County
- Generating units
- 2
- Share of state capacity
- 9.12%
- Rank among coal plants in New Mexico
- #1 of 1
- EIA plant code
- 2442
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 4 | Conventional Steam Coal | 818 MW | 770 MW | 1969 | Operating |
| 5 | Conventional Steam Coal | 818 MW | 770 MW | 1970 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in New Mexico
| SunZia Wind South | Wind | 2,561 MW |
| SunZia Wind North | Wind | 1,089 MW |
| Hobbs Generating Station | Natural gas | 682 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 1,636 MW solar plant and a 1,636 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All New Mexico power plants · What New Mexico actually generates