Stillwater Facility
Churchill County, Nevada · EIA plant ID 50765 · Operator: Enel Stillwater LLC
Nameplate69MWSummer 62 MW
Generators5in service
Net generation91GWh12 mo to Dec 2025
Capacity factor15%geothermal units, summer MW
Heat rate—thermal plants only
First online2009
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 | 56.2 | 75.4% | — |
| 2002 | 50.6 | 67.9% | — |
| 2003 | 59.4 | 79.7% | — |
| 2004 | 65.2 | 87.4% | — |
| 2005 | 60.5 | 81.3% | — |
| 2006 | 49.5 | 66.5% | — |
| 2007 | 49.5 | 66.5% | — |
| 2008 | 36.6 | 48.9% | — |
| 2009 | 0.4 | 0.1% | — |
| 2010 | 133.1 | 37.6% | — |
| 2011 | 155.4 | 43.9% | — |
| 2012 | 151.7 | 42.8% | — |
| 2013 | 276.6 | 65.6% | — |
| 2014 | 181 | 39.0% | — |
| 2015 | 175.4 | 37.8% | — |
| 2016 | 176.7 | 37.8% | — |
| 2017 | 166.3 | 35.6% | — |
| 2018 | 159.3 | 33.9% | — |
| 2019 | 150.4 | 31.4% | — |
| 2020 | 58.5 | 5.8% | — |
| 2021 | 138.1 | 27.7% | — |
| 2022 | 134.4 | 26.7% | — |
| 2023 | 123.7 | 24.5% | — |
| 2024 | 128.3 | 25.5% | — |
| 2025 | 90.6 | 14.9% | — |
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 | Solar Photovoltaic | PV | 22 | 21.8 | Apr 2012 | Operating | — | coming soon |
| 1-1 | Geothermal | BT | 11.8 | 10.1 | Mar 2009 | Operating | — | coming soon |
| 1-2 | Geothermal | BT | 11.8 | 10.1 | Mar 2009 | Operating | — | coming soon |
| 2-1 | Geothermal | BT | 11.8 | 10.1 | Mar 2009 | Operating | — | coming soon |
| 2-2 | Geothermal | BT | 11.8 | 10.1 | Mar 2009 | Operating | — | coming soon |
| OE11 | Geothermal | BT | 1.5 | 0.6 | Apr 1989 | Retired Jan 2009 | — | coming soon |
| OE12 | Geothermal | BT | 1.5 | 0.6 | Apr 1989 | Retired Jan 2009 | — | coming soon |
| OE13 | Geothermal | BT | 1.5 | 0.7 | Apr 1989 | Retired Jan 2009 | — | coming soon |
| OE14 | Geothermal | BT | 1.5 | 0.7 | Apr 1989 | Retired Jan 2009 | — | coming soon |
| OE15 | Geothermal | BT | 1.5 | 0.6 | Apr 1989 | Retired Jan 2009 | — | coming soon |
| OE16 | Geothermal | BT | 1.5 | 0.7 | Apr 1989 | Retired Jan 2009 | — | coming soon |
| OE17 | Geothermal | BT | 1.5 | 0.6 | Apr 1989 | Retired Jan 2009 | — | coming soon |
| OE21 | Geothermal | BT | 1.5 | 0.6 | Apr 1989 | Retired Jan 2009 | — | coming soon |
| OE22 | Geothermal | BT | 1.5 | 0.5 | Apr 1989 | Retired Jan 2009 | — | coming soon |
| OE23 | Geothermal | BT | 1.5 | 0.6 | Apr 1989 | Retired Jan 2009 | — | coming soon |
| OE24 | Geothermal | BT | 1.5 | 0.6 | Apr 1989 | Retired Jan 2009 | — | coming soon |
| OE25 | Geothermal | BT | 1.5 | 0.6 | Apr 1989 | Retired Jan 2009 | — | coming soon |
| OE26 | Geothermal | BT | 1.5 | 0.6 | Apr 1989 | Retired Jan 2009 | — | coming soon |
| OE27 | Geothermal | BT | 1.5 | 0.5 | Apr 1989 | Retired Jan 2009 | — | coming soon |
Owner / operator
Operator: Enel Stillwater LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Enel Stillwater LLC | 68.2% | 47 MW |
| EGP Stillwater Solar, LLC | 31.8% | 22 MW |
Nearby plants
Within 80 km.
| EGP Stillwater Solar PV II, LLC | 20 MW | 0.7 km |
| Soda Lake Geothermal No I II | retired | 24.3 km |
| Soda Lake 3 | 26 MW | 25.3 km |
| ENEL Salt Wells LLC | 24 MW | 28.2 km |
| Desert Peak Power Plant | 26 MW | 41.1 km |
| Patua Acquisition Project, LLC | 59 MW | 44.6 km |