Our Clean Energy Portfolio
Renewable energy sources resulted in 3,695 gigawatt-hours*, or 35.8 percent, of generation in 2024, as reported to the Hawaii Public Utilities Commission in our annual Renewable Energy Portfolio status report. This does not include energy savings from solar water heating or quantifiable energy efficiency. The 2024 total is an increase from 3,392 gigawatt-hours in 2023.
Hawaiian Electric generation in 2024 totaled 10,311 gigawatt-hours.
* A gigawatt-hour is a unit of electrical energy equal to one thousand megawatt hours, one million kilowatt-hours, or one billion watt-hours. A 100-watt bulb burning for one hour uses 100 watt-hours of electricity.
Percentage of generation from renewable energy
Percentage of generation from renewable energy in 2024
- Oahu - 30.8%
- Maui County - 41.1%
- Hawaii Island - 58.7%
Where is this renewable energy coming from?
Gigawatt-hours of renewable energy produced in 2024
- Wind - 666
- Biomass (including waste-to-energy) - 339
- Solar Photovoltaic - 646
- Geothermal - 259
- Hydro-electricity - 35
- Biofuels - 59
2024 Total System Generation Mix
The following table shows the mix of fuels used to generate electricity for delivery to customers in each of our service areas in 2024.
| % of Generation | Oahu | Maui County | Hawaii Island |
|---|---|---|---|
| Biomass (including municipal solid waste) | 4.5% | 0.0% | 0.0% |
| Geothermal | 0.0% | 0.0% | 19.1% |
| Utility-scale Photovoltaic and Solar Thermal | 6.8% | 4.8% | 4.8% |
| Hydro | 0.0% | 0.0% | 2.6% |
| Wind | 3.8% | 16.5% | 11.2% |
| Biofuels | 0.2% | 0.0% | 3.0% |
| Customer-sited, Grid-connected renewables | 15.5% | 19.8% | 18.0% |
| Oil | 69.2% | 58.9% | 41.3% |
| Coal | 0.0% | 0.0% | 0.0% |
| TOTAL: | 100% | 100% | 100% |