Hamakua Energy Plant
Hawaii County, Hawaii · EIA plant ID 55369 · Operator: Hamakua Energy, LLC
8 MW planned (Batteries), first expected Nov 2030 · EIA-860M
Nameplate66MWSummer 61 MW
Generators3in service
Net generation185GWh12 mo to Aug 2026
Capacity factor33%gas/coal/oil units, summer MW
Heat rate9,049Btu/kWhfossil units, electric fuel, HHV
First online2000Runs as peaking
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), gas/coal/oil 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) |
|---|---|---|---|
| 2001 | 317.7 | — | — |
| 2002 | 421.2 | — | — |
| 2003 | 449.5 | 84.4% | 7,880 |
| 2004 | 445.4 | 83.4% | 7,820 |
| 2005 | 436.1 | 81.9% | 7,820 |
| 2006 | 423.7 | 79.5% | 7,820 |
| 2007 | 395.3 | 74.2% | 7,922 |
| 2008 | 399.5 | 74.8% | 8,176 |
| 2009 | 334.8 | 62.8% | 8,185 |
| 2010 | 286.2 | 53.7% | 8,461 |
| 2011 | 215.8 | 40.5% | 8,610 |
| 2012 | 231.9 | 43.4% | 8,509 |
| 2013 | 170.4 | 32.0% | 8,237 |
| 2014 | 182.3 | 34.2% | 8,472 |
| 2015 | 224.3 | 42.1% | 8,644 |
| 2016 | 131.2 | 24.6% | 9,436 |
| 2017 | 145.1 | 27.2% | 9,475 |
| 2018 | 264 | 49.6% | 8,623 |
| 2019 | 402.3 | 75.5% | 8,367 |
| 2020 | 232.9 | 41.4% | 8,997 |
| 2021 | 221.1 | 34.8% | 8,311 |
| 2022 | 217.5 | 34.6% | 8,245 |
| 2023 | 267.4 | 39.2% | 7,547 |
| 2024 | 62.6 | 5.8% | 6,267 |
| 2025 | 88.2 | 11.7% | 8,340 |
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 | Petroleum Liquids | CT | 23 | 21.7 | Jul 2000 | Operating | — | coming soon |
| CT2 | Petroleum Liquids | CT | 23 | 21.7 | Oct 2000 | Operating | — | coming soon |
| ST1 | Petroleum Liquids | CA | 20 | 17.4 | Oct 2000 | Operating | — | coming soon |
| BESS1 | Batteries | BA | 7.5 | 7.5 | planned Nov 2030 | Planned | — | coming soon |
Owner / operator
Operator: Hamakua Energy, LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Hamakua Energy, LLC | 100.0% | 66 MW |
Nearby plants
Within 80 km.
| Waimea | 8 MW | 24.7 km |
| Hale Kuawehi Solar Hybrid | 74 MW | 27.9 km |
| Keamuku | — | 36.6 km |
| AES Waikoloa Solar Hybrid | 60 MW | 37.3 km |
| Hawi Wind Farm | 11 MW | 43.6 km |
| Hu Honua Bioenergy Facility | — | 48.8 km |