ORNI 43, LLC, a subsidiary of Ormat Technologies, owns and operates the Tungsten Mountain Geothermal Project in Churchill County, Nevada, approximately 25 miles east of Fallon. The project is one of Ormat’s largest geothermal developments in the United States and is designed to provide reliable, baseload renewable electricity to the regional power grid.
Project Highlights
- Location: Churchill County, Nevada
- Owner/Developer: ORNI 43, LLC (Ormat Technologies)
- Energy Source: Geothermal
- Generating Capacity: Approximately 75 MW, making it one of Nevada’s larger geothermal power facilities.
- Power Plants: The development includes two geothermal power plants designed to convert geothermal fluids into electricity.
Development Infrastructure
The overall Tungsten Mountain project includes:
- Up to 43 geothermal wells consisting of production and injection wells.
- Multiple well pads for drilling and field operations.
- Geothermal fluid gathering and injection pipeline systems.
- Electrical transmission (gen-tie) lines connecting the project to the regional grid.
- New and improved access roads.
- Ancillary facilities supporting long-term field operations and maintenance.
2026 Development Activity
Development remains active in 2026. Nevada regulators issued and reviewed additional geothermal injection well permits, including Well 24A-22, indicating ORNI 43 continues to expand and optimize the geothermal reservoir through phased drilling and field development.
Operational Significance
Unlike conventional oil and gas developments, the Tungsten Mountain project continuously circulates geothermal fluids through production and injection wells to generate renewable electricity around the clock. The facility has been operating since 2017 and remains an important contributor to Nevada’s renewable energy portfolio, generating more than 250 GWh of electricity annually in recent years.
Author: phinds