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Maalaea

Maui County, Hawaii · EIA plant ID 6504 · Operator: Maui Electric Co Ltd
OilPetroleum Liquids
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Nameplate230MWSummer 198 MW
Generators21in service
Net generation642GWh12 mo to Aug 2026
Capacity factor37%gas/coal/oil units, summer MW
Heat rate9,382Btu/kWhfossil units, electric fuel, HHV
First online1971Runs as intermediate

The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.

Monthly net generation

EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
050100150GWh2001200320052007200920112013201520172019202120232025

Capacity factor by year

Net MWh ÷ (summer MW × hours), gas/coal/oil units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
0%20%40%2005201020152020202537.0% · 12 mo

Heat rate by year

Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
8,8009,0009,2009,4009,600200520102015202020259,382 Btu/kWh · 12 mo
Annual data table
YearNet GWhCapacity factorHeat rate (Btu/kWh)
2001861.3——
20021,686.2——
200390754.4%9,342
2004938.156.2%9,400
200594156.5%9,446
2006885.652.2%9,691
2007860.647.9%9,167
2008843.346.8%9,119
200981545.4%9,211
2010823.145.8%9,213
2011825.947.6%9,146
2012776.344.7%9,069
2013726.741.9%9,131
2014679.439.2%9,264
2015721.641.6%9,113
2016704.440.5%9,133
2017693.740.0%9,230
2018676.239.0%9,259
2019701.240.5%9,302
2020549.731.6%9,408
2021620.335.8%9,406
2022671.638.7%9,307
202367038.6%9,317
2024573.833.0%9,541
202562335.9%9,424

Generators

EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
Gen IDTechnologyPrime moverNameplate MWSummer MWOnlineStatusPlanned retirementOEM / model
1Petroleum LiquidsIC2.62.5Dec 1971Operating—coming soon
10Petroleum LiquidsIC12.512.3Dec 1979Operating—coming soon
11Petroleum LiquidsIC12.512.3Jul 1980Operating (Out of service, expected back within the year)—coming soon
12Petroleum LiquidsIC12.512.3Apr 1988Operating—coming soon
13Petroleum LiquidsIC12.512.3May 1989Operating—coming soon
14Petroleum LiquidsCT23.621.1May 1992Operating—coming soon
15Petroleum LiquidsCA1812Oct 1993Operating—coming soon
16Petroleum LiquidsCT23.621.1May 1993Operating—coming soon
17Petroleum LiquidsCT2517.6Dec 1998Operating—coming soon
18Petroleum LiquidsCA1813.8Oct 2006Operating—coming soon
19Petroleum LiquidsCT2517.6Sep 2000Operating—coming soon
2Petroleum LiquidsIC2.62.5Jul 1972Operating—coming soon
3Petroleum LiquidsIC2.62.5Sep 1972Operating—coming soon
4Petroleum LiquidsIC5.65.5Nov 1973Operating—coming soon
5Petroleum LiquidsIC5.65.5Dec 1973Operating—coming soon
6Petroleum LiquidsIC5.65.5Mar 1975Operating—coming soon
7Petroleum LiquidsIC5.65.5Aug 1975Operating—coming soon
8Petroleum LiquidsIC5.65.5Nov 1977Operating—coming soon
9Petroleum LiquidsIC5.65.5Jul 1978Operating—coming soon
X1Petroleum LiquidsIC2.62.5Mar 1987Operating—coming soon
X2Petroleum LiquidsIC2.62.5Mar 1987Operating—coming soon

Owner / operator

Operator: Maui Electric Co Ltd. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
Maui Electric Co Ltd100.0%230 MW

Nearby plants

Within 80 km.
Kuihelani Phase 2—0.6 km
Kaheawa Wind Power II LLC31 MW4.5 km
AES Maui Kuihelani Solar Hybrid120 MW4.8 km
Kihei Solar Farm3 MW6.2 km
Kaheawa Pastures Wind Farm30 MW6.2 km
Kuihelani Substation1 MW7 km