Hellyer Solar Farm
Solar power plant in Santa Clara County, California. 2.2 MW of nameplate capacity across 1 generator, operated by County of Santa Clara - (CA).
Also known as EIA plant 62689
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 2.2 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- August 2017First generator online
- Operator
- County of Santa Clara - (CA)EIA operator ID 62628
- Grid
- CAISOBalancing authority CISO
- Price nodes
- None linkedNo verified ISO node
- Location
- Santa Clara County, CA37.2870, −121.8151
- EIA plant ID
- 62689EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Hellyer Solar Farm produces
Free · EIA-923Net generation, 2025
241 MWh
241 MWh, final
Capacity factor, 2025
1.3%
2024: 0.0%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2019 to 2025
0.0–4.6
GWh a year. Low 2024, high 2021
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | Not reported | Not reported | 0 of 12 |
| 2003 | Not reported | Not reported | 0 of 12 |
| 2004 | Not reported | Not reported | 0 of 12 |
| 2005 | Not reported | Not reported | 0 of 12 |
| 2006 | Not reported | Not reported | 0 of 12 |
| 2007 | Not reported | Not reported | 0 of 12 |
| 2008 | Not reported | Not reported | 0 of 12 |
| 2009 | Not reported | Not reported | 0 of 12 |
| 2010 | Not reported | Not reported | 0 of 12 |
| 2011 | Not reported | Not reported | 0 of 12 |
| 2012 | Not reported | Not reported | 0 of 12 |
| 2013 | Not reported | Not reported | 0 of 12 |
| 2014 | Not reported | Not reported | 0 of 12 |
| 2015 | Not reported | Not reported | 0 of 12 |
| 2016 | Not reported | Not reported | 0 of 12 |
| 2017 | Not reported | Not reported | 0 of 12 |
| 2018 | Not reported | Not reported | 0 of 12 |
| 2019 | 3,653 | 19.0% | 12 of 12 |
| 2020 | 3,736 | 19.3% | 12 of 12 |
| 2021 | 4,594 | 23.8% | 12 of 12 |
| 2022 | 3,705 | 19.2% | 12 of 12 |
| 2023 | 3,620 | 18.8% | 12 of 12 |
| 2024 | 0 | 0.0% | 12 of 12 |
| 2025 | 241 | 1.3% | 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 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 |
|---|---|---|---|
| HFARM | Solar Photovoltaic | 2.2 | August 2017 |
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 County of Santa Clara - (CA) as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Modeled curtailment
A range, not one number. The lower bound counts hours inside the production tax credit window; the upper bound is the no-credit case.
Expected vs reported generation
Monthly modeled expected output and physical potential next to EIA-923 reported output.
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Power plants near Hellyer Solar Farm
More plants operated by County of Santa Clara - (CA)
Questions about Hellyer Solar Farm
How much power does Hellyer Solar Farm produce?
Hellyer Solar Farm reported 241 MWh (241 MWh) of net generation in 2025, a 1.3% capacity factor on 2.2 MW of nameplate capacity.
Where is Hellyer Solar Farm?
Hellyer Solar Farm is in Santa Clara County, California, at 37.2870, −121.8151. It is in the California Independent System Operator balancing area (CISO).
Who operates Hellyer Solar Farm?
EIA-860M for August 2026 lists County of Santa Clara - (CA) as the operator (EIA operator ID 62628). The operator is not always the owner.
When did Hellyer Solar Farm start operating?
Its first generator began operating in August 2017, 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