North Valmy
Natural gas power plant in Humboldt County, Nevada. 567 MW of nameplate capacity across 2 generators, operated by Sierra Pacific Power Co.
Also known as North Valmy Generating Station · EIA plant 8224
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Key facts
- Capacity
- 567 MWNameplate
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- December 1981First generator online
- Operator
- Sierra Pacific Power CoEIA operator ID 17166
- Grid
- NEVPBalancing authority NEVP
- Price nodes
- None linkedNo verified ISO node
- Location
- Humboldt County, NV40.8813, −117.1516
- EIA plant ID
- 8224EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power North Valmy produces
Free · EIA-923Net generation, 2025
1.30 TWh
1,297,695 MWh, final
Capacity factor, 2025
Not reported
2024: 23.4%
January to July 2026
935 GWh
Provisional
Range, 2015 to 2025
0.7–1.7
TWh a year. Low 2017, high 2019
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 4,011,243 | Not reported | 12 of 12 |
| 2001 | 3,699,381 | Not reported | 12 of 12 |
| 2002 | 2,090,114 | Not reported | 12 of 12 |
| 2003 | 3,325,422 | Not reported | 12 of 12 |
| 2004 | 4,021,890 | Not reported | 12 of 12 |
| 2005 | 3,952,077 | Not reported | 12 of 12 |
| 2006 | 3,550,925 | Not reported | 12 of 12 |
| 2007 | 3,391,541 | Not reported | 12 of 12 |
| 2008 | 3,540,943 | Not reported | 12 of 12 |
| 2009 | 3,370,266 | Not reported | 12 of 12 |
| 2010 | 2,863,718 | 57.7% | 12 of 12 |
| 2011 | 1,861,472 | 37.5% | 12 of 12 |
| 2012 | 1,628,528 | 32.7% | 12 of 12 |
| 2013 | 2,530,196 | 50.9% | 12 of 12 |
| 2014 | 2,755,911 | 55.5% | 12 of 12 |
| 2015 | 1,425,257 | Not reported | 12 of 12 |
| 2016 | 970,557 | 19.5% | 12 of 12 |
| 2017 | 652,832 | 13.1% | 12 of 12 |
| 2018 | 1,449,924 | 29.2% | 12 of 12 |
| 2019 | 1,698,721 | 34.2% | 12 of 12 |
| 2020 | 932,195 | 18.7% | 12 of 12 |
| 2021 | 1,568,146 | Not reported | 12 of 12 |
| 2022 | 1,401,898 | 28.2% | 12 of 12 |
| 2023 | 981,775 | Not reported | 12 of 12 |
| 2024 | 1,164,606 | 23.4% | 12 of 12 |
| 2025 | 1,297,695 | Not reported | 12 of 12 |
| 2026 (provisional, partial year) | 935,209 | Not reported | 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 CAMPDCO₂, 2025
1.66M
US short tons. 2024: 1.63M
SO₂, 2025
2,673
US short tons
NOx, 2025
1,919
US short tons
CO₂ per MWh, calculated
1.28 t
About 2,557 lb per MWh
2 of 2 EPA units reported CO₂ in 2025 (1, 2), matched to EIA plant 8224 through the EPA–EIA crosswalk. The per-MWh rate is EPA CO₂ divided by EIA-923 net generation. The two reporting boundaries can differ.
Water use
Free · EIA-923 cooling, USGSWithdrawal, 2024
27
million gallons
Consumption, 2024
28
million gallons
Source
Wells; WELLS
Ground, Fresh. Induced-draft tower
Watershed stress
Low · 0.329
USGS SUI, HUC12 Storehouse Spring-Humboldt River
24 of 24 cooling months report withdrawal. Groundwater user; SUI describes surface water and is context only. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 1 | Natural Gas Steam Turbine | 277.2 | December 1981 |
| 2 | Natural Gas Steam Turbine | 289.8 | May 1985 |
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 Sierra Pacific Power Co as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Power plants near North Valmy
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Questions about North Valmy
How much power does North Valmy produce?
North Valmy reported 1,297,695 MWh (1.30 TWh) of net generation in 2025. From January to July 2026 it reported 935 GWh, which is provisional.
Where is North Valmy?
North Valmy is in Humboldt County, Nevada, at 40.8813, −117.1516. It is in the Nevada Power Company balancing area (NEVP).
Who operates North Valmy?
EIA-860M for August 2026 lists Sierra Pacific Power Co as the operator (EIA operator ID 17166). The operator is not always the owner.
When did North Valmy start operating?
Its first generator began operating in December 1981, 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)
- EPA CAMPD annual emissions through the EPA–EIA crosswalk, 1995 to 2025
- EIA-923 cooling water 2024 and the USGS surface water supply and use index, Water years 2010-2020 (Oct 2009 to Sep 2020), mean of monthly values
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page