Black Mountain Generating Station
Natural gas power plant · Mohave County, Arizona
Nameplate capacity
121 MW
Rank in Arizona
#78
of 200 plants
In service since
2008
May 2008
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combustion Turbine
- Operator
- UNS Electric, Inc
- County
- Mohave County
- Generating units
- 2
- Share of state capacity
- 0.28%
- Rank among natural gas plants in Arizona
- #25 of 33
- EIA plant code
- 56482
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Natural Gas Fired Combustion Turbine | 61 MW | 43 MW | 2008 | Operating |
| 2 | Natural Gas Fired Combustion Turbine | 61 MW | 43 MW | 2008 | 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 Arizona
| Arlington Valley Solar Energy II | Solar | 129 MW |
| Arlington Valley Solar Energy I | Solar | 127 MW |
| Mesquite Solar 5, LLC | Solar | 120 MW |
| Sierra Pinta BESS | Battery storage | 113 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 121 MW solar plant and a 121 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 Arizona power plants · What Arizona actually generates