Maalaea
Oil power plant in Maui County, Hawaii. 217.3 MW of nameplate capacity across 20 generators, operated by Maui Electric Co Ltd.
Also known as Maalaea Power Plant · EIA plant 6504
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Key facts
- Capacity
- 217.3 MWNameplate
- Generators
- 20 operatingEIA-860M, August 2026
- Operating since
- December 1971First generator online
- Operator
- Maui Electric Co LtdEIA operator ID 11843
- Grid
- Not reported
- Price nodes
- None linkedNo verified ISO node
- Location
- Maui County, HI20.8012, −156.4930
- EIA plant ID
- 6504EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Maalaea produces
Free · EIA-923Net generation, 2025
623 GWh
623,047 MWh, final
Capacity factor, 2025
31.0%
2024: 28.4%
January to July 2026
359 GWh
Provisional
Range, 2015 to 2025
549.7–721.6
GWh a year. Low 2020, high 2015
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 811,786 | Not reported | 12 of 12 |
| 2001 | 861,257 | Not reported | 12 of 12 |
| 2002 | 1,686,200 | Not reported | 12 of 12 |
| 2003 | 906,989 | Not reported | 12 of 12 |
| 2004 | 938,143 | Not reported | 12 of 12 |
| 2005 | 941,019 | Not reported | 12 of 12 |
| 2006 | 885,608 | Not reported | 12 of 12 |
| 2007 | 860,560 | Not reported | 12 of 12 |
| 2008 | 843,330 | Not reported | 12 of 12 |
| 2009 | 815,030 | Not reported | 12 of 12 |
| 2010 | 823,125 | 40.9% | 12 of 12 |
| 2011 | 72,956 | 42.7% | 1 of 12 |
| 2012 | 776,333 | 38.5% | 12 of 12 |
| 2013 | 726,742 | Not reported | 12 of 12 |
| 2014 | 454,985 | 33.7% | 8 of 12 |
| 2015 | 721,621 | 35.8% | 12 of 12 |
| 2016 | 704,389 | 34.9% | 12 of 12 |
| 2017 | 693,656 | 34.5% | 12 of 12 |
| 2018 | 676,161 | 33.6% | 12 of 12 |
| 2019 | 701,217 | 34.8% | 12 of 12 |
| 2020 | 549,720 | 27.2% | 12 of 12 |
| 2021 | 620,269 | 30.8% | 12 of 12 |
| 2022 | 671,617 | 33.4% | 12 of 12 |
| 2023 | 670,033 | 33.3% | 12 of 12 |
| 2024 | 573,791 | 28.4% | 12 of 12 |
| 2025 | 623,047 | 31.0% | 12 of 12 |
| 2026 (provisional, partial year) | 359,458 | 30.7% | 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 |
|---|---|---|---|
| 1 | Petroleum Liquids | 2.6 | December 1971 |
| 2 | Petroleum Liquids | 2.6 | July 1972 |
| 3 | Petroleum Liquids | 2.6 | September 1972 |
| 4 | Petroleum Liquids | 5.6 | November 1973 |
| 5 | Petroleum Liquids | 5.6 | December 1973 |
| 6 | Petroleum Liquids | 5.6 | March 1975 |
| 7 | Petroleum Liquids | 5.6 | August 1975 |
| 8 | Petroleum Liquids | 5.6 | November 1977 |
| 9 | Petroleum Liquids | 5.6 | July 1978 |
| 10 | Petroleum Liquids | 12.5 | December 1979 |
| 12 | Petroleum Liquids | 12.5 | April 1988 |
| 13 | Petroleum Liquids | 12.5 | May 1989 |
| 14 | Petroleum Liquids | 23.6 | May 1992 |
| 15 | Petroleum Liquids | 18.0 | October 1993 |
| 16 | Petroleum Liquids | 23.6 | May 1993 |
| 17 | Petroleum Liquids | 25.0 | December 1998 |
| 18 | Petroleum Liquids | 18.0 | October 2006 |
| 19 | Petroleum Liquids | 25.0 | September 2000 |
| X1 | Petroleum Liquids | 2.6 | March 1987 |
| X2 | Petroleum Liquids | 2.6 | March 1987 |
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 Maui Electric Co Ltd 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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Power plants near Maalaea
More plants operated by Maui Electric Co Ltd
Questions about Maalaea
How much power does Maalaea produce?
Maalaea reported 623,047 MWh (623 GWh) of net generation in 2025, a 31.0% capacity factor on 217.3 MW of nameplate capacity. From January to July 2026 it reported 359 GWh, which is provisional.
Where is Maalaea?
Maalaea is in Maui County, Hawaii, at 20.8012, −156.4930.
Who operates Maalaea?
EIA-860M for August 2026 lists Maui Electric Co Ltd as the operator (EIA operator ID 11843). The operator is not always the owner.
When did Maalaea start operating?
Its first generator began operating in December 1971, 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)
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page