Hamakua Energy Plant
Oil power plant in Hawaii County, Hawaii. 66 MW of nameplate capacity across 3 generators, operated by Hamakua Energy LP.
Also known as EIA plant 55369
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 66 MWNameplate
- Generators
- 3 operatingEIA-860M, August 2026
- Operating since
- July 2000First generator online
- Operator
- Hamakua Energy LPEIA operator ID 61213
- Grid
- Not reported
- Price nodes
- None linkedNo verified ISO node
- Location
- Hawaii County, HI20.0939, −155.4711
- EIA plant ID
- 55369EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Hamakua Energy Plant produces
Free · EIA-923Net generation, 2025
88.2 GWh
88,241 MWh, final
Capacity factor, 2025
15.3%
2024: 10.8%
January to July 2026
109 GWh
Provisional
Range, 2015 to 2025
62.6–402.3
GWh a year. Low 2024, high 2019
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 37,268 | Not reported | 12 of 12 |
| 2001 | 317,716 | Not reported | 12 of 12 |
| 2002 | 421,208 | Not reported | 12 of 12 |
| 2003 | 449,537 | Not reported | 12 of 12 |
| 2004 | 445,357 | Not reported | 12 of 12 |
| 2005 | 436,079 | Not reported | 12 of 12 |
| 2006 | 423,658 | Not reported | 12 of 12 |
| 2007 | 395,314 | Not reported | 12 of 12 |
| 2008 | 399,529 | Not reported | 12 of 12 |
| 2009 | 334,767 | Not reported | 12 of 12 |
| 2010 | 286,176 | 49.5% | 12 of 12 |
| 2011 | 215,791 | 37.3% | 12 of 12 |
| 2012 | 231,855 | 40.0% | 12 of 12 |
| 2013 | 170,399 | Not reported | 12 of 12 |
| 2014 | 182,295 | 31.5% | 12 of 12 |
| 2015 | 224,284 | 38.8% | 12 of 12 |
| 2016 | 131,160 | 22.6% | 12 of 12 |
| 2017 | 145,071 | 25.1% | 12 of 12 |
| 2018 | 264,004 | 45.7% | 12 of 12 |
| 2019 | 402,285 | 69.6% | 12 of 12 |
| 2020 | 90,823 | 47.0% | 4 of 12 |
| 2021 | 221,052 | 38.2% | 12 of 12 |
| 2022 | 217,489 | 37.6% | 12 of 12 |
| 2023 | 267,384 | 46.2% | 12 of 12 |
| 2024 | 62,578 | 10.8% | 12 of 12 |
| 2025 | 88,241 | 15.3% | 12 of 12 |
| 2026 (provisional, partial year) | 109,261 | 32.5% | 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 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.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| CT1 | Petroleum Liquids | 23.0 | July 2000 |
| CT2 | Petroleum Liquids | 23.0 | October 2000 |
| ST1 | Petroleum Liquids | 20.0 | October 2000 |
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 Hamakua 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 Hamakua Energy Plant
How much power does Hamakua Energy Plant produce?
Hamakua Energy Plant reported 88,241 MWh (88.2 GWh) of net generation in 2025, a 15.3% capacity factor on 66 MW of nameplate capacity. From January to July 2026 it reported 109 GWh, which is provisional.
Where is Hamakua Energy Plant?
Hamakua Energy Plant is in Hawaii County, Hawaii, at 20.0939, −155.4711.
Who operates Hamakua Energy Plant?
EIA-860M for August 2026 lists Hamakua Energy LP as the operator (EIA operator ID 61213). The operator is not always the owner.
When did Hamakua Energy Plant start operating?
Its first generator began operating in July 2000, 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