Wailuku River Hydroelectric
Hilo Forest Reserve, Hilo, HI 96720Plant Summary Information
Wailuku River Hydroelectric is ranked #40 out of 66 power plants in Hawaii in terms of total annual net electricity generation.
Wailuku River Hydroelectric is comprised of 2 generators and generated 10.0 GWh during the 3-month period between December 2025 to March 2026.
| Plant Name | Wailuku River Hydroelectric |
|---|---|
| Utility Name | Wailuku Holding Company LLC |
| Location | Hawaii County, HI |
| Initial Operation Date | May 1993 |
| Last Update | Mar 2026 |
| Annual Generation | 21.0 GWh |
| Annual Consumption | 79.6 k MMBtu |
| Ranked #5,230 out of 12,332 Power Plants Nationwide | |
| Ranked #710 out of 1,256 Water Power Plants Nationwide | |
| Ranked #40 out of 66 Hawaii Power Plants | |
| Ranked #2 out of 5 Hawaii Water Power Plants | |
| Fuel Types | Water |
Map of Wailuku River Hydroelectric
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Monthly Net Generation for Wailuku River Hydroelectric
Monthly Plant Fuel Consumption for Wailuku River Hydroelectric
Wailuku River Hydroelectric Details
| Summary Information | |
|---|---|
| Plant Name | Wailuku River Hydroelectric (54827) |
| Plant Address | Hilo Forest Reserve, Hilo, HI 96720 |
| Utility | Wailuku Holding Company LLC (54809) |
| Latitude, Longitude | 19.71299, -155.14857 |
| Generation Dates on File | Jan 2001 to Mar 2026 |
| Initial Operation Date | May 1993 |
| Annual Generation | 21.0 GWh |
| Fuel Types | Water |
| Federal Energy Regulatory Commission (FERC) Information | |
| FERC Cogeneration Status | No |
| FERC Small Power Producer Status | Yes |
| FERC Small Power Producer Docket Number | 06-70-000. |
| FERC Exempt Wholesale Generator Status | No |
| Regulatory Information | |
|---|---|
| Regulatory Status | Non-Regulated |
| NERC Region | |
| Balancing Authority | () |
| NAICS Code | Utilities (22) |
| Sector | IPP Non-CHP (2) |
| Water Source | Wailuku River |
| Ash Impoundment | No |
| Transmission / Distribution Owner | Hawaii Electric Light Co Inc (8287) HI |
| Grid Voltage | 69.00 kV |
| Energy Storage | No |
Generator 8101 Details Operating May 1993
| Technology | Conventional Hydroelectric |
|---|---|
| Prime Mover | Hydroelectric Turbine |
| Ownership | Single Owner |
| Nameplate Capacity | 5.2 MW |
| Nameplate Power Factor | 0.85 |
| Summer Capacity | 4.9 MW |
| Winter Capacity | 4.8 MW |
| Minimum Load | 0.1 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
|---|---|
| First Operation Date | May 1993 |
| Combined Heat & Power | No |
| Sector Name | IPP Non-CHP (2) |
| Energy Source | Water |
| Solid Fuel Gasification | No |
| Carbon Capture Technology | No |
| Time From Cold Shutdown To Full Load | 10M |
| Multiple Fuels | No |
Generator 8102 Details Operating May 1993
| Technology | Conventional Hydroelectric |
|---|---|
| Prime Mover | Hydroelectric Turbine |
| Ownership | Single Owner |
| Nameplate Capacity | 5.2 MW |
| Nameplate Power Factor | 0.85 |
| Summer Capacity | 4.9 MW |
| Winter Capacity | 4.8 MW |
| Minimum Load | 0.1 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
|---|---|
| First Operation Date | May 1993 |
| Combined Heat & Power | No |
| Sector Name | IPP Non-CHP (2) |
| Energy Source | Water |
| Solid Fuel Gasification | No |
| Carbon Capture Technology | No |
| Time From Cold Shutdown To Full Load | 10M |
| Multiple Fuels | No |
Wailuku River Hydroelectric Plant Owners
| Owner Name | Address | Generator | Ownership | We couldn't locate any owners for this plant |
|---|
Power Plants with Similar Net Generation
Power plants with a similar annual net generation from Water.
| Rank | Plant Name | Plant Location | Annual Generation |
|---|---|---|---|
| #700 | Mechanicville Hydroelectric Station | Mechanicville, NY | 21.8 GWh |
| #701 | A G Wishon | North Fork, CA | 21.6 GWh |
| #702 | White River Lock and Dam 3 | Marcella, AR | 21.6 GWh |
| #703 | Spicer Meadow Project | Murphys, CA | 21.6 GWh |
| #704 | Black Bear Lake | Craig, AK | 21.4 GWh |
| #705 | Big Fork | Big Fork, MT | 21.3 GWh |
| #706 | Orono B | Orono, ME | 21.3 GWh |
| #707 | Fleish | Fleish, NV | 21.3 GWh |
| #708 | Rio | Glen Spey, NY | 21.2 GWh |
| #709 | Heart Mountain | Cody, WY | 21.0 GWh |
| #711 | Moyie Springs | Moyie Springs, ID | 20.9 GWh |
| #712 | Newport | Newport, VT | 20.6 GWh |
| #713 | Boulder | Boulder, UT | 20.4 GWh |
| #714 | Fairfax Falls | Fairfax, VT | 20.4 GWh |
| #715 | West Buxton | Buxton, ME | 20.4 GWh |
| #716 | Bishop Creek 3 | Bishop, CA | 20.3 GWh |
| #717 | Deerfield 4 | Buckland, MA | 20.2 GWh |
| #718 | Middle Fork Irrigation District | Parkdale, OR | 20.1 GWh |
| #719 | Nooksack Hydro | Glacier, WA | 20.1 GWh |
| #720 | Spearfish Hydro | Spearfish, SD | 19.9 GWh |
Nearby Power Plants
Below are closest 20 power plants surrounding Wailuku River Hydroelectric.
| Plant Name | Plant Location | Annual Generation | Distance |
|---|---|---|---|
| AES Maui Kuihelani Solar Hybrid | Waikapu, HI | 99.3 GWh | 116.7 mi |
| AES Waikoloa Solar Hybrid | Waikoloa Village, HI | 59.3 GWh | 42.1 mi |
| Auwahi Wind Energy Hybrid | Kula, HI | 87.2 GWh | 97.3 mi |
| Hale Kuawehi Solar Hybrid | Waimea, HI | 78.7 GWh | 37.8 mi |
| Hamakua Energy Plant | Honokaa, HI | 108.9 GWh | 33.6 mi |
| Hana Substation | Hana, HI | 210.0 MWh | 91.2 mi |
| Kaheawa Pastures Wind Farm Hybrid | Maalaea, HI | 54.6 GWh | 118.5 mi |
| Kaheawa Wind Power II LLC | Wailuku, HI | 48.3 GWh | 116.9 mi |
| Kahului | Kahului, HI | 157.1 GWh | 118.1 mi |
| Kanoelehua | Hilo, HI | 11.1 GWh | 5.6 mi |
| Keahole | Kailua Kona, HI | 302.1 GWh | 57.2 mi |
| Kuihelani Substation | Kahului, HI | 2.0 MWh | 117 mi |
| Maalaea | Kihei, HI | 630.7 GWh | 115.1 mi |
| Mauna Loa Macadamia Nut | Keaau, HI | 1.4 GWh | 9.9 mi |
| Pakini Nui Wind Farm | Naalehu, HI | 111.8 GWh | 62.1 mi |
| Puna | Keaau, HI | 105.9 GWh | 9.5 mi |
| Puna Geothermal Venture I | Pahoa, HI | 258.9 GWh | 23.4 mi |
| Puueo | Hilo, HI | 1.7 GWh | 3.9 mi |
| W H Hill | Hilo, HI | 105.6 GWh | 5.7 mi |
| Waimea | Kamuela, HI | 7.3 GWh | 41.6 mi |