Wadham Energy
Biomass power plant in Colusa County, California. 29.1 MW of nameplate capacity across 1 generator, operated by Wadham Energy LP.
Also known as Wadham Energy LP · EIA plant 50293
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Key facts
- Capacity
- 29.1 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- March 1989First generator online
- Operator
- Wadham Energy LPEIA operator ID 19946
- Grid
- CAISOBalancing authority CISO
- Price nodes
- 1 CAISO nodeResource nodes with prices
- Location
- Colusa County, CA39.1062, −122.1096
- EIA plant ID
- 50293EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Wadham Energy produces
Free · EIA-923Net generation, 2025
145 GWh
144,507 MWh, final
Capacity factor, 2025
56.7%
2024: 51.6%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
74.4–196.4
GWh a year. Low 2023, high 2016
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | 129,502 | Not reported | 12 of 12 |
| 2002 | 175,545 | Not reported | 12 of 12 |
| 2003 | 175,618 | Not reported | 12 of 12 |
| 2004 | 107,722 | Not reported | 12 of 12 |
| 2005 | 106,773 | Not reported | 12 of 12 |
| 2006 | 113,277 | Not reported | 12 of 12 |
| 2007 | 129,283 | Not reported | 12 of 12 |
| 2008 | 131,110 | Not reported | 12 of 12 |
| 2009 | 173,678 | Not reported | 12 of 12 |
| 2010 | 175,653 | 70.1% | 12 of 12 |
| 2011 | 204,138 | 81.5% | 12 of 12 |
| 2012 | 183,912 | 73.2% | 12 of 12 |
| 2013 | 196,487 | 78.4% | 12 of 12 |
| 2014 | 170,418 | 68.0% | 12 of 12 |
| 2015 | 154,009 | 61.5% | 12 of 12 |
| 2016 | 196,433 | 78.2% | 12 of 12 |
| 2017 | 187,139 | Not reported | 12 of 12 |
| 2018 | 166,216 | 65.2% | 12 of 12 |
| 2019 | 188,290 | 73.9% | 12 of 12 |
| 2020 | 146,543 | 57.3% | 12 of 12 |
| 2021 | 192,354 | 75.5% | 12 of 12 |
| 2022 | 144,546 | 56.7% | 12 of 12 |
| 2023 | 74,443 | 29.2% | 12 of 12 |
| 2024 | 131,970 | 51.6% | 12 of 12 |
| 2025 | 144,507 | 56.7% | 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.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| GEN1 | Other Waste Biomass | 29.1 | March 1989 |
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 Wadham Energy LP 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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Questions about Wadham Energy
How much power does Wadham Energy produce?
Wadham Energy reported 144,507 MWh (145 GWh) of net generation in 2025, a 56.7% capacity factor on 29.1 MW of nameplate capacity.
Where is Wadham Energy?
Wadham Energy is in Colusa County, California, at 39.1062, −122.1096. It is in the California Independent System Operator balancing area (CISO).
Who operates Wadham Energy?
EIA-860M for August 2026 lists Wadham Energy LP as the operator (EIA operator ID 19946). The operator is not always the owner.
When did Wadham Energy start operating?
Its first generator began operating in March 1989, according to EIA-860M.
Does InfraMap have power prices for Wadham Energy?
Yes. InfraMap has CAISO day-ahead and real-time prices at 1 price node linked to Wadham Energy, 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
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page