Kapaia Power Station
Kauai County, Hawaii · EIA plant ID 56258 · Operator: Kauai Island Utility Cooperative
Nameplate39MWSummer 28 MW
Generators1in service
Net generation192GWh12 mo to Aug 2026
Capacity factor79%other units, summer MW
Heat rate9,293Btu/kWhfossil units, electric fuel, HHV
First online2002
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
Capacity factor by year
Net MWh ÷ (summer MW × hours), other units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2004 | 195.7 | — | 8,543 |
| 2005 | 211.7 | — | 8,515 |
| 2006 | 217.1 | — | 8,546 |
| 2007 | 220.3 | — | 8,666 |
| 2008 | 216.3 | — | 8,798 |
| 2009 | 215.6 | — | 8,811 |
| 2010 | 219.1 | — | 8,753 |
| 2011 | 212 | — | 8,669 |
| 2012 | 220.5 | 92.4% | 8,697 |
| 2013 | 206.3 | 88.1% | 8,751 |
| 2014 | 210.8 | 90.4% | 8,766 |
| 2015 | 180 | 77.1% | 9,833 |
| 2016 | 182.1 | 75.3% | 9,071 |
| 2017 | 185.2 | 77.5% | 8,878 |
| 2018 | 192.3 | 81.7% | 9,001 |
| 2019 | 174.3 | 73.6% | 9,112 |
| 2020 | 139.4 | 52.4% | 8,970 |
| 2021 | 146.5 | — | 9,367 |
| 2022 | 168.6 | 25.2% | 9,430 |
| 2023 | 179 | — | 9,357 |
| 2024 | 190.8 | — | 8,743 |
| 2025 | 190.1 | 78.6% | 9,337 |
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 ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| CT1 | All Other | GT | 39.1 | 27.5 | Sep 2002 | Operating | — | coming soon |
Owner / operator
Operator: Kauai Island Utility Cooperative. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Kauai Island Utility Cooperative | 100.0% | 39 MW |
Nearby plants
Within 80 km.
| KIUC Kapaia PV and BA Storage Project Hybrid | 28 MW | 0.4 km |
| Biomass to Energy Facility, Kauai | 10 MW | 9.4 km |
| Kapaa Photovoltaic Project | 1 MW | 10.4 km |
| KRS II Koloa Solar | 12 MW | 13.1 km |
| AES Lawai Solar Hybrid | 40 MW | 15.5 km |
| KRS I Anahola Solar Hybrid | 12 MW | 16.8 km |