MWPowerPlantFacts
PowerPlantFactsEvidence report · prepared 2 September 2026https://powerplantfacts.com/entity/766
EIA plant 766

Pearl City · Honolulu · HI

Waiau

Operated by Hawaiian Electric Co Inc

Annual generation991,273 MWhSum of represented EIA-923 rows
Fuel codesDFO, RFOCodes retained from EIA records
Grid contextUnavailableBalancing authority or NERC region

Published location

Where is Waiau?

This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.

21.388997, -157.961518

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Map data © OpenStreetMap contributors

Capacity is not generation. Nameplate MW describes equipment; annual MWh describes recorded output. Proposed and retired units are not added to operating capacity.

2024 monthly net generation

MonthNet generation
1131,031 MWh
282,758 MWh
365,444 MWh
464,764 MWh
571,802 MWh
687,965 MWh
789,327 MWh
8104,814 MWh
975,427 MWh
1081,027 MWh
1155,156 MWh
1281,758 MWh

Operating generators

IDTechnologyFuelMWStatus
W7Petroleum LiquidsRFO81.6OP
W8Petroleum LiquidsRFO81.6OP
W5Petroleum LiquidsRFO54.4OP
W6Petroleum LiquidsRFO54.4OP
W10Petroleum LiquidsDFO51.3OP
W9Petroleum LiquidsDFO51.3OP
W3Petroleum LiquidsRFO50OP
W4Petroleum LiquidsRFO50OP

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Identity, technology and limitations
EIA plant ID
766
Sector
Electric Utility
Water source
Pearl Harbor
Data edition
2024-final