Granite Mountain Solar West, LLC
Solar power plant in Iron County, Utah. 50.4 MW of nameplate capacity across 1 generator, operated by Clearway Renewable Operation & Maintenance LLC.
Also known as Granite Mountain Solar West · EIA plant 59945
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 50.4 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- September 2016First generator online
- Operator
- Clearway Renewable Operation & Maintenance LLCEIA operator ID 64629
- Grid
- PACEBalancing authority PACE
- Price nodes
- None linkedNo verified ISO node
- Location
- Iron County, UT37.7989, −113.3220
- EIA plant ID
- 59945EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Granite Mountain Solar West produces
Free · EIA-923Net generation, 2025
125 GWh
125,158 MWh, final
Capacity factor, 2025
28.3%
2024: 29.0%
January to July 2026
75.0 GWh
Provisional
Range, 2017 to 2025
110.7–131.3
GWh a year. Low 2022, high 2020
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | Not reported | Not reported | 0 of 12 |
| 2003 | Not reported | Not reported | 0 of 12 |
| 2004 | Not reported | Not reported | 0 of 12 |
| 2005 | Not reported | Not reported | 0 of 12 |
| 2006 | Not reported | Not reported | 0 of 12 |
| 2007 | Not reported | Not reported | 0 of 12 |
| 2008 | Not reported | Not reported | 0 of 12 |
| 2009 | Not reported | Not reported | 0 of 12 |
| 2010 | Not reported | Not reported | 0 of 12 |
| 2011 | Not reported | Not reported | 0 of 12 |
| 2012 | Not reported | Not reported | 0 of 12 |
| 2013 | Not reported | Not reported | 0 of 12 |
| 2014 | Not reported | Not reported | 0 of 12 |
| 2015 | Not reported | Not reported | 0 of 12 |
| 2016 | 25,727 | Not reported | 5 of 12 |
| 2017 | 127,971 | 29.0% | 12 of 12 |
| 2018 | 123,567 | 28.0% | 12 of 12 |
| 2019 | 125,440 | 28.4% | 12 of 12 |
| 2020 | 131,285 | 29.7% | 12 of 12 |
| 2021 | 125,093 | 28.3% | 12 of 12 |
| 2022 | 110,658 | 25.1% | 12 of 12 |
| 2023 | 120,873 | 27.4% | 12 of 12 |
| 2024 | 128,188 | 29.0% | 12 of 12 |
| 2025 | 125,158 | 28.3% | 12 of 12 |
| 2026 (provisional, partial year) | 75,015 | 29.3% | 7 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024. Plants without steam cooling, such as wind, solar and batteries, do not report cooling water.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| GMSW | Solar Photovoltaic | 50.4 | September 2016 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Clearway Renewable Operation & Maintenance LLC as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Modeled curtailment
A range, not one number. The lower bound counts hours inside the production tax credit window; the upper bound is the no-credit case.
Expected vs reported generation
Monthly modeled expected output and physical potential next to EIA-923 reported output.
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Power plants near Granite Mountain Solar West
More plants operated by Clearway Renewable Operation & Maintenance LLC
Questions about Granite Mountain Solar West
How much power does Granite Mountain Solar West, LLC produce?
Granite Mountain Solar West, LLC reported 125,158 MWh (125 GWh) of net generation in 2025, a 28.3% capacity factor on 50.4 MW of nameplate capacity. From January to July 2026 it reported 75.0 GWh, which is provisional.
Where is Granite Mountain Solar West, LLC?
Granite Mountain Solar West, LLC is in Iron County, Utah, at 37.7989, −113.3220. It is in the PacifiCorp - East balancing area (PACE).
Who operates Granite Mountain Solar West, LLC?
EIA-860M for August 2026 lists Clearway Renewable Operation & Maintenance LLC as the operator (EIA operator ID 64629). The operator is not always the owner.
When did Granite Mountain Solar West, LLC start operating?
Its first generator began operating in September 2016, according to EIA-860M.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page