Gay Robinson
Hydro power plant in Kauai County, Hawaii. 7.7 MW of nameplate capacity across 2 generators, operated by Gay & Robinson Inc.
Also known as EIA plant 50333
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 7.7 MWNameplate
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- March 1982First generator online
- Operator
- Gay & Robinson IncEIA operator ID 7019
- Grid
- NABalancing authority NA
- Price nodes
- None linkedNo verified ISO node
- Location
- Kauai County, HI21.9178, −159.6294
- EIA plant ID
- 50333EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Gay Robinson produces
Free · EIA-923Net generation, 2025
35.6 GWh
35,594 MWh, final
Capacity factor, 2025
46.7%
2024: 55.5%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
4.5–45.6
GWh a year. Low 2018, high 2021
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | 13,516 | Not reported | 12 of 12 |
| 2002 | 14,436 | Not reported | 12 of 12 |
| 2003 | 14,632 | Not reported | 12 of 12 |
| 2004 | 15,868 | Not reported | 12 of 12 |
| 2005 | 19,201 | Not reported | 12 of 12 |
| 2006 | 14,956 | Not reported | 12 of 12 |
| 2007 | 13,567 | Not reported | 12 of 12 |
| 2008 | 1,221 | Not reported | 1 of 12 |
| 2009 | 17,648 | Not reported | 12 of 12 |
| 2010 | 6,661 | Not reported | 12 of 12 |
| 2011 | 7,749 | 14.3% | 12 of 12 |
| 2012 | 7,306 | 13.4% | 12 of 12 |
| 2013 | 6,265 | 11.5% | 12 of 12 |
| 2014 | 5,855 | 30.4% | 12 of 12 |
| 2015 | 6,072 | 31.5% | 12 of 12 |
| 2016 | 7,341 | 38.0% | 12 of 12 |
| 2017 | 6,553 | 34.0% | 12 of 12 |
| 2018 | 4,548 | 23.6% | 12 of 12 |
| 2019 | 33,313 | Not reported | 12 of 12 |
| 2020 | 42,613 | 55.8% | 12 of 12 |
| 2021 | 45,624 | 59.9% | 12 of 12 |
| 2022 | 35,172 | 46.2% | 12 of 12 |
| 2023 | 43,525 | 57.1% | 12 of 12 |
| 2024 | 42,401 | 55.5% | 12 of 12 |
| 2025 | 35,594 | 46.7% | 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 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 |
|---|---|---|---|
| HYD2 | Conventional Hydroelectric | 1.2 | March 1982 |
| HYD3 | Conventional Hydroelectric | 6.5 | January 2019 |
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 Gay & Robinson Inc 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 Gay Robinson
How much power does Gay Robinson produce?
Gay Robinson reported 35,594 MWh (35.6 GWh) of net generation in 2025, a 46.7% capacity factor on 7.7 MW of nameplate capacity.
Where is Gay Robinson?
Gay Robinson is in Kauai County, Hawaii, at 21.9178, −159.6294. It is in the No BA balancing area (NA).
Who operates Gay Robinson?
EIA-860M for August 2026 lists Gay & Robinson Inc as the operator (EIA operator ID 7019). The operator is not always the owner.
When did Gay Robinson start operating?
Its first generator began operating in March 1982, 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