Stillwater Facility — Plant Summary
- EIA Plant ID
- 50765
- Capacity
- 69.2 MW
- Primary Fuel
- Geothermal
- Technology
- Geothermal, Solar Photovoltaic
- Status
- Operating
- Location
- Churchill, NV
- Operating Since
- 2009
- Generators
- 5
- Operator
- Ormat Stillwater LLC
- Parent Company
- Enel
- Annual Generation
- 128,297 MWh
- Capacity Factor
- 21.1%
- Balancing Authority
- Nevada Power Company
- ISO/RTO
- —
- NERC Region
- WECC
Stillwater Facility
OperatingGeothermalSolarHybrid
Ranked #5 of 27 Geothermal plants in NV#17 of 70 nationally
69.2 MW Geothermal (47 MW) + Solar Photovoltaic (22 MW) operating in Churchill, NV — Nevada Power Company
EIAGEMWD
69.2 MW
Nameplate Capacity
5
Generators
units
Hybrid (2)
Technology
Geothermal + Solar Photovoltaic
2009
Operating Since
Location
Coordinates
39.5475, -118.5556
County
Churchill, NV
Nearby Plants
- Thermal KemDistillate Oil2.9 MW · 0.5 km
- Stillwater Solar PV IISolar20 MW · 1.3 km
- Soda Lake 3Geothermal26 MW · 24.9 km
Ownership & Operator
Owner data does not fully agree across sources.
EIA typically reports the operating utility, while GEM resolves to the financial owner or parent corporation. Both can be correct.
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Ormat Stillwater LLC | Enel Green Power | — |
| Owner(s) | EGP Stillwater Solar, LLC, Ormat Stillwater LLC | Enel | — |
| Status | Operating | operating | — |
Ownership Chain
About
The Stillwater Facility is a hybrid geothermal and solar photovoltaic power plant located in Churchill County, Nevada. The plant, which began operating in 2009, has a total capacity of 69.2 MW across 5 generators. It is owned by Enel, an Italian multinational, and operated by Ormat Stillwater LLC. The plant's primary fuel source is geothermal energy, supplemented by solar power. Stillwater is ranked as the 5th largest power plant in Nevada out of 27, and 17th nationally out of 70 geothermal plants.
In the most recent year of data, the Stillwater Facility generated 128,297 MWh of electricity, resulting in a capacity factor of 21.1%. The plant operates within the Nevada Power Company balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. Financial data indicates a power purchase agreement (PPA) price of $75.84 per MWh. The solar component of the hybrid plant utilizes a fixed tilt tracking system.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
Nevada Power Company
Grid Voltage
60 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Generation
10.8K MWh
Latest Month
128.3K MWh
Annual Generation
21.1%
Capacity Factor
Jan 2022 – Dec 2024
Financial DataBeta
Source: FERC Electric Quarterly Reports, LBNL Utility-Scale SolarHIGH
$75.8/MWh
PPA Price
Ormat Stillwater LLC
Contract Seller
Per-Unit Cost Trends
Pricing & Market Data
This plant is outside organized wholesale electricity markets (ISOs/RTOs). Nodal pricing data is not available.
News & Articles (10)Beta
Industry·corporate
Geothermal Energy in the United States: Overview, Developments, Exploration Areas, and Leading Companies
Harnessing Earth's Heat for a Sustainable Future. Overview of Geothermal Energy in the United States. Geothermal energy, derived from the natural heat...
EnergyNow.com·5 months ago
Industry·corporate
Chickasha industrial park development could generate $3.5B investment, 3,000 jobs
Gov. Kevin Stitt joined local leaders in Chickasha today to unveil plans for a new industrial park and power generation initiative.
Kevin Stitt (executive)
Southwest Ledger·9 months ago
Industry·corporate
Stillwater, NV – triple hybrid geothermal and solar plant
Enel Green Power operates the unique triple hybrid Stillwater geothermal power plant in Nevada that combines geothermal, solar PV and solar thermal.
Enel Green Power (operator)Stillwater (other)
ThinkGeoEnergy·4 years ago
Industry·technology
Daylight On Demand: Why Batteries May Fuel The Future Of Solar Power In Nevada
Despite all the favorable conditions and high demand for solar power in Nevada, there are challenges.There's the COVID-19 pandemic,...
KUNR Public Radio·5 years ago
Last updated 2026-03-14
View all 10 articles