Ormesa I
Imperial County, California · EIA plant ID 50766 · Operator: Ormat Nevada Inc
×12 MW geothermal retired since 2020 (latest Jan 2025)
Nameplate19MWSummer 13 MW
Generators2in service
Net generation66GWh12 mo to Dec 2025
Capacity factor62%geothermal units, summer MW
Heat rate—thermal plants only
First online2003
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 | 115.4 | 62.0% | — |
| 2002 | 124.1 | 66.7% | — |
| 2003 | 125.6 | 67.5% | — |
| 2004 | 133.2 | 71.4% | — |
| 2005 | 125.7 | 67.5% | — |
| 2006 | 129.4 | 69.6% | — |
| 2007 | 131.4 | 70.8% | — |
| 2008 | 120.6 | 64.8% | — |
| 2009 | 129.5 | 69.7% | — |
| 2010 | 92.8 | 50.0% | — |
| 2011 | 94.6 | 50.9% | — |
| 2012 | 0.1 | 0.0% | — |
| 2013 | 84.8 | 44.4% | — |
| 2014 | 79.9 | 42.6% | — |
| 2015 | 70.2 | 37.4% | — |
| 2016 | 66 | 35.1% | — |
| 2017 | 64.1 | 34.2% | — |
| 2018 | 83 | 53.8% | — |
| 2019 | 64.7 | 42.0% | — |
| 2020 | 98.7 | 63.8% | — |
| 2021 | 109.9 | 71.3% | — |
| 2022 | 105.7 | 68.6% | — |
| 2023 | 101.7 | 65.9% | — |
| 2024 | 70.2 | 50.0% | — |
| 2025 | 66.4 | 61.6% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| ITLU1 | Geothermal | BT | 12 | 8 | Jun 2003 | Operating | — | coming soon |
| OEC2A | Geothermal | BT | 7 | 4.7 | Feb 2025 | Operating | — | coming soon |
| ITLU2 | Geothermal | BT | 12 | 8 | Jul 2003 | Retired Jan 2025 | — | coming soon |
| OE1 | Geothermal | ST | 1.2 | 0.7 | Dec 1986 | Retired Sep 2003 | — | coming soon |
| OE10 | Geothermal | ST | 1.2 | 0.7 | Dec 1986 | Retired Sep 2003 | — | coming soon |
| OE11 | Geothermal | ST | 1.2 | 0.5 | May 1989 | Retired Sep 2003 | — | coming soon |
| OE12 | Geothermal | ST | 1.2 | 0.5 | Dec 1986 | Retired Sep 2003 | — | coming soon |
| OE13 | Geothermal | ST | 1.2 | 0.7 | Dec 1986 | Retired Sep 2003 | — | coming soon |
| OE14 | Geothermal | ST | 1.2 | 0.5 | May 1989 | Retired Sep 2003 | — | coming soon |
| OE15 | Geothermal | ST | 1.2 | 0.5 | Dec 1986 | Retired Sep 2003 | — | coming soon |
| OE16 | Geothermal | ST | 1.2 | 0.7 | Dec 1986 | Retired Sep 2003 | — | coming soon |
| OE2 | Geothermal | ST | 1.2 | 0.7 | Dec 1986 | Retired Sep 2003 | — | coming soon |
| OE21 | Geothermal | ST | 1.2 | 0.5 | May 1989 | Retired Sep 2003 | — | coming soon |
| OE22 | Geothermal | ST | 1.2 | 0.5 | Dec 1986 | Retired Sep 2003 | — | coming soon |
| OE23 | Geothermal | ST | 1.2 | 0.9 | Dec 1986 | Retired Jul 2008 | — | coming soon |
| OE24 | Geothermal | ST | 1.2 | 0.5 | Dec 1986 | Retired Sep 2003 | — | coming soon |
| OE25 | Geothermal | ST | 1.2 | 0.5 | Dec 1986 | Retired Sep 2003 | — | coming soon |
| OE26 | Geothermal | ST | 1.2 | 0.9 | Dec 1986 | Retired Apr 2012 | — | coming soon |
| OE27 | Geothermal | ST | 1.2 | 0.9 | Dec 1986 | Retired Sep 2003 | — | coming soon |
| OE28 | Geothermal | ST | 1.2 | 0.9 | Dec 1986 | Retired Sep 2003 | — | coming soon |
| OE3 | Geothermal | ST | 1.2 | 0.9 | Dec 1986 | Retired Sep 2003 | — | coming soon |
| OE31 | Geothermal | BT | 1.2 | 0.8 | Dec 1986 | Retired Jun 2018 | — | coming soon |
| OE32 | Geothermal | BT | 1.2 | 0.8 | Dec 1986 | Retired Jun 2018 | — | coming soon |
| OE4 | Geothermal | ST | 1.2 | 0.7 | Dec 1986 | Retired Sep 2003 | — | coming soon |
| OE5 | Geothermal | ST | 1.2 | 1.1 | Dec 1986 | Retired Sep 2003 | — | coming soon |
| OE6 | Geothermal | ST | 1.2 | 1.1 | Dec 1986 | Retired Sep 2003 | — | coming soon |
| OE7 | Geothermal | ST | 1.2 | 0.7 | Dec 1986 | Retired Sep 2003 | — | coming soon |
| OE8 | Geothermal | ST | 1.2 | 0.7 | Dec 1986 | Retired Sep 2003 | — | coming soon |
| OE9 | Geothermal | ST | 1.2 | 0.7 | Dec 1986 | Retired Sep 2003 | — | 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% | 19 MW |
Nearby plants
Within 80 km.
| Vikings Energy Farm | 287 MW | 1.9 km |
| Ormesa II | 24 MW | 3.2 km |
| Geo East Mesa II | 22 MW | 4.5 km |
| Geo East Mesa III | 46 MW | 4.5 km |
| Holtville | 30 MW | 12.3 km |
| Drop 4 | 20 MW | 12.8 km |