Hawaii Cogen
Hawaii Cogen is a 12 MW oil-fired power plant in Honolulu County, Hawaii, operated by Island Energy Services. EIA-860M lists 4 generating units here. Its units entered service between 1990 and 2011.
As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m
- Nameplate capacity
- 12.2 MW
- 12.8 MW net summer
- Generating units
- 4
- In service
- 1990–2011
- EIA plant ID
- 10194
Where it is
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- County
- Honolulu County, Hawaii
- Coordinates
- 21.3117, -158.1139
- Balancing authority
- Not reported
- Sector
- Industrial CHP
Units, technology and status
- Operator of record
- Island Energy Services
- Primary energy source
- Petroleum
- Technologies
- Petroleum Liquids
- Status
- Out of service and NOT expected to return to service in next calendar year
Hawaii Cogen: FAQ
- Where is Hawaii Cogen?
- In Honolulu County, Hawaii (HI). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.
- How big is Hawaii Cogen?
- 12 MW of nameplate capacity across 4 units, as of the EIA-860M release for 2026-07.
- Who owns Hawaii Cogen?
- EIA-860M names Island Energy Services as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
- Is this the same as Hawaii Cogen LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Island Energy Services here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "Hawaii Cogen LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Hawaii Cogen still running?
- EIA-860M files it as "Out of service and NOT expected to return to service in next calendar year" for 2026-07. Statuses change monthly, and this page follows the monthly release.