Spaulding 1
Hydro power plant in Nevada County, California. 7 MW of nameplate capacity across 1 generator, operated by Pacific Gas & Electric Co..
Also known as EIA plant 281
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 7 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- May 1928First generator online
- Operator
- Pacific Gas & Electric Co.EIA operator ID 14328
- Grid
- CAISOBalancing authority CISO
- Price nodes
- 1 CAISO nodeResource nodes with prices
- Location
- Nevada County, CA39.3246, −120.6448
- EIA plant ID
- 281EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Spaulding 1 produces
Free · EIA-923Net generation, 2025
17.4 GWh
17,437 MWh, final
Capacity factor, 2025
28.4%
2024: 28.6%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
4.5–48.1
GWh a year. Low 2018, high 2017
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 35,911 | Not reported | 12 of 12 |
| 2001 | 18,950 | Not reported | 12 of 12 |
| 2002 | 34,750 | Not reported | 12 of 12 |
| 2003 | 36,827 | Not reported | 12 of 12 |
| 2004 | 32,138 | Not reported | 12 of 12 |
| 2005 | 33,167 | Not reported | 12 of 12 |
| 2006 | 43,366 | Not reported | 12 of 12 |
| 2007 | 27,902 | Not reported | 12 of 12 |
| 2008 | 24,825 | Not reported | 12 of 12 |
| 2009 | 41,185 | Not reported | 12 of 12 |
| 2010 | 35,122 | 57.3% | 12 of 12 |
| 2011 | 30,120 | 49.1% | 12 of 12 |
| 2012 | 33,874 | 55.1% | 12 of 12 |
| 2013 | 23,859 | 38.9% | 12 of 12 |
| 2014 | 25,046 | 40.8% | 12 of 12 |
| 2015 | 21,925 | 35.8% | 12 of 12 |
| 2016 | 16,756 | 27.3% | 12 of 12 |
| 2017 | 48,076 | 78.4% | 12 of 12 |
| 2018 | 4,496 | 7.3% | 12 of 12 |
| 2019 | 6,648 | 10.8% | 12 of 12 |
| 2020 | 14,160 | 23.0% | 12 of 12 |
| 2021 | 15,234 | 24.8% | 12 of 12 |
| 2022 | 26,846 | 43.8% | 12 of 12 |
| 2023 | 36,563 | 59.6% | 12 of 12 |
| 2024 | 17,590 | 28.6% | 12 of 12 |
| 2025 | 17,437 | 28.4% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 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 account · CAISOEmissions
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 | 7.0 | May 1928 |
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 Pacific Gas & Electric Co. as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
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Power plants near Spaulding 1
More plants operated by Pacific Gas & Electric Co.
Questions about Spaulding 1
How much power does Spaulding 1 produce?
Spaulding 1 reported 17,437 MWh (17.4 GWh) of net generation in 2025, a 28.4% capacity factor on 7 MW of nameplate capacity.
Where is Spaulding 1?
Spaulding 1 is in Nevada County, California, at 39.3246, −120.6448. It is in the California Independent System Operator balancing area (CISO).
Who operates Spaulding 1?
EIA-860M for August 2026 lists Pacific Gas & Electric Co. as the operator (EIA operator ID 14328). The operator is not always the owner.
When did Spaulding 1 start operating?
Its first generator began operating in May 1928, according to EIA-860M.
Does InfraMap have power prices for Spaulding 1?
Yes. InfraMap has CAISO day-ahead and real-time prices at 1 price node linked to Spaulding 1, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
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)
- CAISO day-ahead and real-time prices; node and hub assignments as of 2026-10-05
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page