Haypress
Hydro power plant in Sierra County, California. 10 MW of nameplate capacity across 2 generators, operated by EIF Haypress LLC.
Also known as EIA plant 10253
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 10 MWNameplate
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- December 1988First generator online
- Operator
- EIF Haypress LLCEIA operator ID 56531
- Grid
- CAISOBalancing authority CISO
- Price nodes
- 2 CAISO nodesResource nodes with prices
- Location
- Sierra County, CA39.5657, −120.5817
- EIA plant ID
- 10253EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Haypress produces
Free · EIA-923Net generation, 2025
17.1 GWh
17,085 MWh, final
Capacity factor, 2025
19.5%
2024: 17.1%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
1.5–24.7
GWh a year. Low 2021, high 2016
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | 7,580 | Not reported | 12 of 12 |
| 2002 | 16,593 | Not reported | 12 of 12 |
| 2003 | 17,866 | Not reported | 12 of 12 |
| 2004 | 16,655 | Not reported | 12 of 12 |
| 2005 | 20,538 | Not reported | 12 of 12 |
| 2006 | 24,401 | Not reported | 12 of 12 |
| 2007 | 10,788 | Not reported | 12 of 12 |
| 2008 | 10,835 | Not reported | 12 of 12 |
| 2009 | 14,906 | Not reported | 12 of 12 |
| 2010 | 17,261 | 19.7% | 12 of 12 |
| 2011 | 29,725 | 33.9% | 12 of 12 |
| 2012 | 15,041 | 17.1% | 12 of 12 |
| 2013 | 9,298 | 10.6% | 12 of 12 |
| 2014 | 6,168 | 7.0% | 12 of 12 |
| 2015 | 1,916 | 2.2% | 12 of 12 |
| 2016 | 24,682 | 28.1% | 12 of 12 |
| 2017 | 22,879 | 26.1% | 12 of 12 |
| 2018 | 16,183 | 18.5% | 12 of 12 |
| 2019 | 15,505 | 17.7% | 12 of 12 |
| 2020 | 5,180 | 5.9% | 12 of 12 |
| 2021 | 1,465 | 1.7% | 12 of 12 |
| 2022 | 12,952 | 14.8% | 12 of 12 |
| 2023 | 18,534 | 21.2% | 12 of 12 |
| 2024 | 15,025 | 17.1% | 12 of 12 |
| 2025 | 17,085 | 19.5% | 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 |
|---|---|---|---|
| LGEN | Conventional Hydroelectric | 5.0 | January 1989 |
| UGEN | Conventional Hydroelectric | 5.0 | December 1988 |
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 EIF Haypress LLC 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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Questions about Haypress
How much power does Haypress produce?
Haypress reported 17,085 MWh (17.1 GWh) of net generation in 2025, a 19.5% capacity factor on 10 MW of nameplate capacity.
Where is Haypress?
Haypress is in Sierra County, California, at 39.5657, −120.5817. It is in the California Independent System Operator balancing area (CISO).
Who operates Haypress?
EIA-860M for August 2026 lists EIF Haypress LLC as the operator (EIA operator ID 56531). The operator is not always the owner.
When did Haypress start operating?
Its first generator began operating in December 1988, according to EIA-860M.
Does InfraMap have power prices for Haypress?
Yes. InfraMap has CAISO day-ahead and real-time prices at 2 price nodes linked to Haypress, 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