Kalaeloa Cogen Plant
Other power plant · Honolulu County, Hawaii
Nameplate capacity
299 MW
Rank in Hawaii
#3
of 76 plants
In service since
1989
October 1989
Details
- Primary fuel
- Other
- Technology
- Petroleum Liquids
- Operator
- Kalaeloa Partners LP
- County
- Honolulu County
- Generating units
- 3
- Share of state capacity
- 8.11%
- Rank among other plants in Hawaii
- #3 of 25
- EIA plant code
- 54646
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| CT1 | Petroleum Liquids | 119 MW | 85 MW | 1989 | Operating |
| CT2 | Petroleum Liquids | 119 MW | 85 MW | 1991 | Operating |
| ST | Petroleum Liquids | 61 MW | 50 MW | 1991 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in Hawaii
| Kahe | Other | 610 MW |
| Waiau | Other | 375 MW |
| Maalaea | Other | 230 MW |
| Kapolei Energy Storage | Battery storage | 185 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 299 MW solar plant and a 299 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Hawaii power plants · What Hawaii actually generates