Power plant · EIA plant code 55369
Hamakua Energy Plant
- Operator
- Hamakua Energy LP
- Location
- Hawaii, HI (county level only)
- Balancing authority
- Not reported
- Nameplate capacity
- 66 MW
- Summer capacity
- 60.8 MW
Planned changes reported to EIA: 1 proposed generator.
U.S. Energy Information Administration · Annual Electric Generator Report (Form EIA-860) · data for 2025 · as of Sep 10, 2026 · retrieved Oct 31, 2026 · CC-BY-4.0 May be out of date. The next release was due by Sep 10, 2027. Last checked for an update: Oct 31, 2026.
Generation in 2025
- Net generation
- 88,241 MWh
- Capacity factor
- 15.3%
Capacity factor is net generation divided by nameplate capacity times the hours each generator was in service that year, counted by month.
U.S. Energy Information Administration · Power Plant Operations Report (Form EIA-923) · data for 2025 · as of Sep 11, 2026 · retrieved Oct 31, 2026 · CC-BY-4.0 May be out of date. The next release was due by Sep 11, 2027. Last checked for an update: Oct 31, 2026.
Emissions
- Carbon dioxide in 2023
- 117,042 metric tons
- Carbon dioxide per MWh
- 965 lb/MWh
eGRID reports 129,017 short tons. One short ton is 0.90718474 metric tons.
Emissions are for 2023, the newest eGRID year. Generation is for 2025, the newest EIA-923 year.
U.S. Environmental Protection Agency · Emissions & Generation Resource Integrated Database (eGRID) · data for 2023 · as of Jun 16, 2025 · retrieved Oct 31, 2026 · CC-BY-4.0 May be out of date. The next release was due by Jan 31, 2026. Last checked for an update: Oct 31, 2026.
Generators
| Generator | Technology | Energy source | Nameplate | Operating since | Status |
|---|---|---|---|---|---|
| BESS1 | Batteries | MWH | 7.5 MW | Proposed, planned start 2030 · As of September 2026 (EIA-860M): (P) Planned for installation, but regulatory approvals not initiated | |
| CT1 | Petroleum Liquids | WO | 23 MW | 2000 | Operable · As of September 2026 (EIA-860M): (OP) Operating |
| CT2 | Petroleum Liquids | WO | 23 MW | 2000 | Operable · As of September 2026 (EIA-860M): (OP) Operating |
| ST1 | Petroleum Liquids | WO | 20 MW | 2000 | Operable · As of September 2026 (EIA-860M): (OP) Operating |
U.S. Energy Information Administration · Monthly Update to the Annual Electric Generator Report (Form EIA-860M) · data for 2026-09 · as of Oct 23, 2026 · retrieved Oct 31, 2026 · CC-BY-4.0 May be out of date. The next release was due by Nov 23, 2026. Last checked for an update: Oct 31, 2026.