Mountainview Generating Station
San Bernardino County, California · EIA plant ID 358 · Operator: Southern California Edison Co
Nameplate1,037MWSummer 1,018 MW
Generators6in service
Net generation1,194GWh12 mo to Aug 2026
Capacity factor13%gas/coal/oil units, summer MW
Heat rate8,186Btu/kWhfossil units, electric fuel, HHV
First online2005Runs as intermediate
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 | 38.3 | — | — |
| 2002 | 0 | — | — |
| 2005 | 148.6 | 42.3% | 7,239 |
| 2006 | 4,866.1 | 59.0% | 7,256 |
| 2007 | 6,308.4 | 76.4% | 7,371 |
| 2008 | 6,691.3 | 80.8% | 7,472 |
| 2009 | 5,749.7 | 69.7% | 7,629 |
| 2010 | 6,034.4 | 73.1% | 7,545 |
| 2011 | 4,631.5 | 50.6% | 7,546 |
| 2012 | 6,586.4 | 77.1% | 7,417 |
| 2013 | 5,518.3 | 64.8% | 7,361 |
| 2014 | 6,172.7 | 72.5% | 7,461 |
| 2015 | 5,750.4 | 67.5% | 7,652 |
| 2016 | 4,890.8 | 57.3% | 7,709 |
| 2017 | 4,040.5 | 47.4% | 7,848 |
| 2018 | 2,091.9 | 24.6% | 7,999 |
| 2019 | 3,040.7 | 34.1% | 7,740 |
| 2020 | 2,866.9 | 32.1% | 7,905 |
| 2021 | 2,025.8 | 22.7% | 7,956 |
| 2022 | 3,755.6 | 42.1% | 7,770 |
| 2023 | 2,552.5 | 28.6% | 8,072 |
| 2024 | 2,493.4 | 27.9% | 7,874 |
| 2025 | 1,371.7 | 15.4% | 7,839 |
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 |
|---|---|---|---|---|---|---|---|---|
| MV3A | Natural Gas Fired Combined Cycle | CT | 164.6 | 156 | Dec 2005 | Operating | — | coming soon |
| MV3B | Natural Gas Fired Combined Cycle | CT | 164.6 | 156 | Dec 2005 | Operating | — | coming soon |
| MV3C | Natural Gas Fired Combined Cycle | CA | 189.2 | 197 | Dec 2005 | Operating | — | coming soon |
| MV4A | Natural Gas Fired Combined Cycle | CT | 164.6 | 156 | Jan 2006 | Operating | — | coming soon |
| MV4B | Natural Gas Fired Combined Cycle | CT | 164.6 | 156 | Jan 2006 | Operating | — | coming soon |
| MV4C | Natural Gas Fired Combined Cycle | CA | 189.2 | 197 | Jan 2006 | Operating | — | coming soon |
| 1 | Natural Gas Steam Turbine | ST | 65.3 | 60 | Aug 1957 | Retired Dec 2002 | — | coming soon |
| 2 | Natural Gas Steam Turbine | ST | 65.3 | 60 | Jul 1958 | Retired Dec 2002 | — | coming soon |
Owner / operator
Operator: Southern California Edison Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Southern California Edison Co | 100.0% | 1,037 MW |
Nearby plants
Within 80 km.
| Solar Photovoltaic Project #13 | retired | 0.6 km |
| Solar Photovoltaic Project #11 | retired | 0.7 km |
| Amazon San Bernardino | retired | 0.8 km |
| Solar Photovoltaic Project #16 | retired | 0.9 km |
| Solar Photovoltaic Project #05 | retired | 1.1 km |
| Solar Photovoltaic Project #48 | retired | 1.3 km |