Collierville Powerhouse
Hydro power plant in Calaveras County, California. 253 MW of nameplate capacity across 2 generators, operated by Northern California Power Agny.
Also known as EIA plant 54555
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 253 MWNameplate
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- November 1989First generator online
- Operator
- Northern California Power AgnyEIA operator ID 40613
- Grid
- CAISOBalancing authority CISO
- Price nodes
- 1 CAISO nodeResource nodes with prices
- Location
- Calaveras County, CA38.1446, −120.3805
- EIA plant ID
- 54555EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Collierville Powerhouse produces
Free · EIA-923Net generation, 2025
342 GWh
341,671 MWh, final
Capacity factor, 2025
15.4%
2024: 23.8%
January to July 2026
297 GWh
Provisional
Range, 2015 to 2025
0.1–1.0
TWh a year. Low 2015, high 2017
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 555,984 | Not reported | 12 of 12 |
| 2001 | 273,930 | Not reported | 12 of 12 |
| 2002 | 377,076 | Not reported | 12 of 12 |
| 2003 | 511,945 | Not reported | 12 of 12 |
| 2004 | 173,695 | Not reported | 12 of 12 |
| 2005 | 848,258 | Not reported | 12 of 12 |
| 2006 | 845,187 | Not reported | 12 of 12 |
| 2007 | 268,523 | Not reported | 12 of 12 |
| 2008 | 277,364 | Not reported | 12 of 12 |
| 2009 | 414,601 | Not reported | 12 of 12 |
| 2010 | 594,303 | 26.8% | 12 of 12 |
| 2011 | 873,186 | 39.4% | 12 of 12 |
| 2012 | 304,970 | 13.7% | 12 of 12 |
| 2013 | 210,523 | 9.5% | 12 of 12 |
| 2014 | 177,673 | 8.0% | 12 of 12 |
| 2015 | 143,402 | 6.5% | 12 of 12 |
| 2016 | 460,788 | 20.7% | 12 of 12 |
| 2017 | 1,032,362 | 46.6% | 12 of 12 |
| 2018 | 365,578 | 16.5% | 12 of 12 |
| 2019 | 907,657 | 41.0% | 12 of 12 |
| 2020 | 305,320 | 13.7% | 12 of 12 |
| 2021 | 186,609 | 8.4% | 12 of 12 |
| 2022 | 264,158 | 11.9% | 12 of 12 |
| 2023 | 978,198 | 44.1% | 12 of 12 |
| 2024 | 528,667 | 23.8% | 12 of 12 |
| 2025 | 341,671 | 15.4% | 12 of 12 |
| 2026 (provisional, partial year) | 297,096 | 23.1% | 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 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 |
|---|---|---|---|
| GEN1 | Conventional Hydroelectric | 126.5 | November 1989 |
| GEN2 | Conventional Hydroelectric | 126.5 | November 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 Northern California Power Agny 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 Collierville Powerhouse
More plants operated by Northern California Power Agny
Questions about Collierville Powerhouse
How much power does Collierville Powerhouse produce?
Collierville Powerhouse reported 341,671 MWh (342 GWh) of net generation in 2025, a 15.4% capacity factor on 253 MW of nameplate capacity. From January to July 2026 it reported 297 GWh, which is provisional.
Where is Collierville Powerhouse?
Collierville Powerhouse is in Calaveras County, California, at 38.1446, −120.3805. It is in the California Independent System Operator balancing area (CISO).
Who operates Collierville Powerhouse?
EIA-860M for August 2026 lists Northern California Power Agny as the operator (EIA operator ID 40613). The operator is not always the owner.
When did Collierville Powerhouse start operating?
Its first generator began operating in November 1989, according to EIA-860M.
Does InfraMap have power prices for Collierville Powerhouse?
Yes. InfraMap has CAISO day-ahead and real-time prices at 1 price node linked to Collierville Powerhouse, 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