Nimbus
Hydro power plant in Sacramento County, California. 13.4 MW of nameplate capacity across 2 generators, operated by U S Bureau of Reclamation.
Also known as EIA plant 444
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 13.4 MWNameplate
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- May 1955First generator online
- Operator
- U S Bureau of ReclamationEIA operator ID 2518
- Grid
- BANCBalancing authority BANC
- Price nodes
- None linkedNo verified ISO node
- Location
- Sacramento County, CA38.6373, −121.2202
- EIA plant ID
- 444EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Nimbus produces
Free · EIA-923Net generation, 2025
35.5 GWh
35,545 MWh, final
Capacity factor, 2025
30.3%
2024: 49.1%
January to July 2026
41.0 GWh
Provisional
Range, 2015 to 2025
22.3–69.9
GWh a year. Low 2021, high 2023
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 66,484 | Not reported | 12 of 12 |
| 2001 | 41,635 | Not reported | 12 of 12 |
| 2002 | 54,156 | Not reported | 12 of 12 |
| 2003 | 67,830 | Not reported | 12 of 12 |
| 2004 | 46,655 | Not reported | 12 of 12 |
| 2005 | 72,318 | Not reported | 12 of 12 |
| 2006 | 77,731 | Not reported | 12 of 12 |
| 2007 | 41,262 | Not reported | 12 of 12 |
| 2008 | 34,413 | Not reported | 12 of 12 |
| 2009 | 58,753 | Not reported | 12 of 12 |
| 2010 | 59,698 | 50.9% | 12 of 12 |
| 2011 | 81,000 | 69.0% | 12 of 12 |
| 2012 | 56,403 | 47.9% | 12 of 12 |
| 2013 | 45,661 | 38.9% | 12 of 12 |
| 2014 | 26,149 | 22.3% | 12 of 12 |
| 2015 | 27,657 | 23.6% | 12 of 12 |
| 2016 | 53,959 | 45.8% | 12 of 12 |
| 2017 | 64,650 | 55.1% | 12 of 12 |
| 2018 | 59,462 | 50.7% | 12 of 12 |
| 2019 | 40,279 | 34.3% | 12 of 12 |
| 2020 | 47,176 | 40.1% | 12 of 12 |
| 2021 | 22,340 | 19.0% | 12 of 12 |
| 2022 | 46,082 | 39.3% | 12 of 12 |
| 2023 | 69,866 | 59.5% | 12 of 12 |
| 2024 | 57,748 | 49.1% | 12 of 12 |
| 2025 | 35,545 | 30.3% | 12 of 12 |
| 2026 (provisional, partial year) | 40,995 | 60.1% | 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 |
|---|---|---|---|
| 1 | Conventional Hydroelectric | 6.7 | May 1955 |
| 2 | Conventional Hydroelectric | 6.7 | June 1955 |
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 U S Bureau of Reclamation as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
300 analyst questions a month, plus MCP
Query Nimbus and 14,224 other projects from Claude or your own tools. Free accounts get 1 question a day.
Power plants near Nimbus
More plants operated by U S Bureau of Reclamation
Questions about Nimbus
How much power does Nimbus produce?
Nimbus reported 35,545 MWh (35.5 GWh) of net generation in 2025, a 30.3% capacity factor on 13.4 MW of nameplate capacity. From January to July 2026 it reported 41.0 GWh, which is provisional.
Where is Nimbus?
Nimbus is in Sacramento County, California, at 38.6374, −121.2202. It is in the Balancing Authority of Northern California balancing area (BANC).
Who operates Nimbus?
EIA-860M for August 2026 lists U S Bureau of Reclamation as the operator (EIA operator ID 2518). The operator is not always the owner.
When did Nimbus start operating?
Its first generator began operating in May 1955, 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)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page