Ormesa II
Imperial County, California · EIA plant ID 54724 · Operator: Ormat Nevada Inc
Nameplate24MWSummer 16 MW
Generators2in service
Net generation125GWh12 mo to Dec 2025
Capacity factor89%geothermal units, summer MW
Heat rate—thermal plants only
First online1989
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), geothermal 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.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 114.6 | 72.7% | — |
| 2002 | 120.2 | 76.2% | — |
| 2003 | 123.6 | 78.4% | — |
| 2005 | 110.7 | 70.2% | — |
| 2006 | 104.2 | 66.1% | — |
| 2007 | 145.6 | 95.9% | — |
| 2008 | 154.9 | 103.1% | — |
| 2009 | 142.3 | 95.0% | — |
| 2010 | 97.5 | 65.1% | — |
| 2011 | 99.3 | 66.3% | — |
| 2012 | 94.1 | 53.6% | — |
| 2013 | 89 | 50.8% | — |
| 2014 | 83.9 | 47.9% | — |
| 2015 | 73.7 | 42.0% | — |
| 2016 | 69.3 | 39.5% | — |
| 2017 | 67.3 | 38.4% | — |
| 2018 | 87.2 | 62.2% | — |
| 2019 | 67.9 | 48.5% | — |
| 2020 | 92.2 | 65.6% | — |
| 2021 | 102.7 | 73.3% | — |
| 2022 | 98.8 | 70.5% | — |
| 2023 | 95 | 67.8% | — |
| 2024 | 131.7 | 93.7% | — |
| 2025 | 124.5 | 88.8% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| OEC21 | Geothermal | BT | 12 | 8 | May 1989 | Operating | — | coming soon |
| OEC22 | Geothermal | BT | 12 | 8 | Apr 2007 | Operating | — | coming soon |
| OE10 | Geothermal | ST | 1.2 | 0.9 | Dec 1987 | Retired Apr 2007 | — | coming soon |
| OE11 | Geothermal | ST | 1.2 | 0.9 | Dec 1987 | Retired Apr 2007 | — | coming soon |
| OE12 | Geothermal | ST | 1.2 | 0.9 | Dec 1987 | Retired Apr 2007 | — | coming soon |
| OE13 | Geothermal | ST | 1.2 | 0.9 | Dec 1987 | Retired Apr 2007 | — | coming soon |
| OE21 | Geothermal | ST | 1.2 | 0.9 | Dec 1987 | Retired Apr 2007 | — | coming soon |
| OE22 | Geothermal | ST | 1.2 | 0.9 | Dec 1987 | Retired Apr 2007 | — | coming soon |
| OE23 | Geothermal | ST | 1.2 | 0.9 | Dec 1987 | Retired Apr 2007 | — | coming soon |
| OE24 | Geothermal | ST | 1.2 | 0.9 | Dec 1987 | Retired Apr 2007 | — | coming soon |
| OE25 | Geothermal | ST | 1.2 | 0.9 | Dec 1987 | Retired Apr 2007 | — | coming soon |
| OE26 | Geothermal | ST | 1.2 | 0.9 | Dec 1987 | Retired Apr 2007 | — | coming soon |
| OE27 | Geothermal | ST | 1.2 | 0.9 | Dec 1987 | Retired Apr 2007 | — | coming soon |
| OEC1 | Geothermal | ST | 1.2 | 0.9 | Dec 1987 | Retired Apr 2007 | — | coming soon |
| OEC2 | Geothermal | ST | 1.2 | 0.9 | Dec 1987 | Retired Apr 2007 | — | coming soon |
| OEC3 | Geothermal | ST | 1.2 | 0.9 | Dec 1987 | Retired Apr 2007 | — | coming soon |
| OEC4 | Geothermal | ST | 1.2 | 0.9 | Dec 1987 | Retired Apr 2007 | — | coming soon |
| OEC5 | Geothermal | ST | 1.2 | 0.9 | Dec 1987 | Retired Apr 2007 | — | coming soon |
| OEC6 | Geothermal | ST | 1.2 | 0.9 | Dec 1987 | Retired Apr 2007 | — | coming soon |
| OEC7 | Geothermal | ST | 1.2 | 0.9 | Dec 1987 | Retired Apr 2007 | — | coming soon |
| OEC8 | Geothermal | ST | 1.2 | 0.9 | Dec 1987 | Retired Apr 2007 | — | coming soon |
| OEC9 | Geothermal | ST | 1.2 | 0.9 | Dec 1987 | Retired Apr 2007 | — | coming soon |
Owner / operator
Operator: Ormat Nevada Inc. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Ormat Nevada Inc | 100.0% | 24 MW |
Nearby plants
Within 80 km.
| Geo East Mesa II | 22 MW | 2 km |
| Geo East Mesa III | 46 MW | 2 km |
| Vikings Energy Farm | 287 MW | 2.8 km |
| Ormesa I | 19 MW | 3.2 km |
| Drop 4 | 20 MW | 9.6 km |
| East Highline | 2 MW | 10.4 km |