Geo East Mesa III
Imperial County, California · EIA plant ID 10763 · Operator: Ormat Nevada Inc
Nameplate46MWSummer 30 MW
Generators3in service
Net generation77GWh12 mo to Dec 2025
Capacity factor29%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 | 57.2 | 35.3% | — |
| 2002 | 77.2 | 47.6% | — |
| 2003 | 64.3 | 39.6% | — |
| 2005 | 61.4 | 37.9% | — |
| 2006 | 72.9 | 45.0% | — |
| 2007 | 97.7 | 47.7% | — |
| 2008 | 102.4 | 46.6% | — |
| 2009 | 104 | 47.5% | — |
| 2010 | 109.1 | 49.8% | — |
| 2011 | 111.1 | 50.7% | — |
| 2012 | 105.3 | 56.8% | — |
| 2013 | 99.6 | 53.9% | — |
| 2014 | 93.9 | 64.2% | — |
| 2015 | 82.4 | 56.4% | — |
| 2016 | 77.6 | 52.9% | — |
| 2017 | 75.3 | 51.5% | — |
| 2018 | 97.6 | 56.5% | — |
| 2019 | 76 | 44.0% | — |
| 2020 | 66.5 | 27.3% | — |
| 2021 | 74.1 | 27.8% | — |
| 2022 | 71.2 | 26.8% | — |
| 2023 | 68.5 | 25.7% | — |
| 2024 | 44.4 | 16.6% | — |
| 2025 | 77.3 | 29.0% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| GBU | Geothermal | BT | 8 | 5.3 | Apr 2007 | Operating | — | coming soon |
| GEN1 | Geothermal | ST | 21.6 | 14.4 | May 1989 | Operating (Out of service) | — | coming soon |
| OE301 | Geothermal | BT | 16 | 10.7 | Apr 2020 | Operating | — | 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% | 46 MW |
Nearby plants
Within 80 km.
| Geo East Mesa II | 22 MW | 0 km |
| Ormesa II | 24 MW | 2 km |
| Vikings Energy Farm | 287 MW | 3.2 km |
| Ormesa I | 19 MW | 4.5 km |
| East Highline | 2 MW | 8.7 km |
| Drop 4 | 20 MW | 8.9 km |