Black Mountain Generating Station
Mohave County, Arizona · EIA plant ID 56482 · Operator: UNS Electric, Inc
Nameplate121MWSummer 86 MW
Generators2in service
Net generation55GWh12 mo to Dec 2025
Capacity factor7%gas/coal/oil units, summer MW
Heat rate10,504Btu/kWhfossil units, electric fuel, HHV
First online2008Runs as peaking
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) |
|---|---|---|---|
| 2008 | 102.7 | 19.4% | 9,820 |
| 2009 | 102.7 | 13.0% | 9,234 |
| 2010 | 87.4 | 11.1% | 9,034 |
| 2011 | 5.2 | 0.7% | 9,817 |
| 2012 | 75.6 | 9.6% | 9,880 |
| 2013 | 51.9 | 6.6% | 9,801 |
| 2014 | 52.1 | 6.6% | 9,865 |
| 2015 | 49.6 | 6.3% | 9,850 |
| 2016 | 56.9 | 7.2% | 10,342 |
| 2017 | 54.1 | 6.9% | 10,192 |
| 2018 | 79.8 | 10.1% | 10,138 |
| 2019 | 98 | 12.4% | 10,276 |
| 2020 | 165.6 | 20.9% | 10,196 |
| 2021 | 127.7 | 16.2% | 10,351 |
| 2022 | 93.7 | 11.9% | 10,475 |
| 2023 | 94.9 | 12.0% | 10,665 |
| 2024 | 86.4 | 10.9% | 10,601 |
| 2025 | 55.2 | 7.3% | 10,504 |
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 |
|---|---|---|---|---|---|---|---|---|
| 1 | Natural Gas Fired Combustion Turbine | GT | 60.5 | 43 | May 2008 | Operating | — | coming soon |
| 2 | Natural Gas Fired Combustion Turbine | GT | 60.5 | 43 | May 2008 | Operating | — | coming soon |
Owner / operator
Operator: UNS Electric, Inc. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| UNS Electric, Inc | 100.0% | 121 MW |
Nearby plants
Within 80 km.
| Black Mountain Solar LLC | 9 MW | 1.5 km |
| Griffith Energy LLC | 655 MW | 3.1 km |
| Kingman Energy Storage | 50 MW | 11.2 km |
| Sierra Solar | — | 12.6 km |
| Kingman 1 | 11 MW | 14.8 km |
| La Senita | 1 MW | 26.8 km |