Waihonu South Solar
95-030 Waihonu Street, Mililani, HI 96761Plant Summary Information
Waihonu South Solar is ranked #27 out of 31 solar farms in Hawaii in terms of total annual net electricity generation.
Waihonu South Solar generated 427.0 MWh during the 3-month period between September 2025 to December 2025.
| Plant Name | Waihonu South Solar |
|---|---|
| Utility Name | ERCAM LLC |
| Location | Honolulu County, HI |
| Initial Operation Date | July 2016 |
| Last Update | Dec 2025 |
| Annual Generation | 2.5 GWh |
| Annual Consumption | 9.0 k MMBtu |
| Ranked #10,305 out of 13,081 Power Plants Nationwide | |
| Ranked #5,241 out of 7,015 Solar Power Plants Nationwide | |
| Ranked #59 out of 67 Hawaii Power Plants | |
| Ranked #27 out of 31 Hawaii Solar Power Plants | |
| Fuel Types | Solar |
| Previous Operator |
Waihonu South LLC (2013 to 2024) ERCAM LLC (2025 to 2025) |
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Monthly Net Generation for Waihonu South Solar
Monthly Plant Fuel Consumption for Waihonu South Solar
Waihonu South Solar Details
| Summary Information | |
|---|---|
| Plant Name | Waihonu South Solar (58656) |
| Plant Address | 95-030 Waihonu Street, Mililani, HI 96761 |
| Utility | ERCAM LLC (67492) |
| Latitude, Longitude | 21.46889, -158.01639 |
| Generation Dates on File | Jul 2016 to Dec 2025 |
| Initial Operation Date | July 2016 |
| Annual Generation | 2.5 GWh |
| Fuel Types | Solar |
| Federal Energy Regulatory Commission (FERC) Information | |
| FERC Cogeneration Status | No |
| FERC Small Power Producer Status | Yes |
| FERC Small Power Producer Docket Number | WF15-555-000 |
| 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 | |
| Ash Impoundment | No |
| Transmission / Distribution Owner | Hawaiian Electric Co Inc (19547) HI |
| Grid Voltage | 46.00 kV |
| Energy Storage | No |
Generator INV-1 Details Operating July 2016
| Technology | Solar Photovoltaic |
|---|---|
| Prime Mover | Photovoltaic |
| Ownership | Single Owner |
| Nameplate Capacity | 0.5 MW |
| Summer Capacity | 0.5 MW |
| Winter Capacity | 0.5 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
|---|---|
| First Operation Date | July 2016 |
| Combined Heat & Power | No |
| Sector Name | IPP Non-CHP (2) |
| Energy Source | Solar |
| Solid Fuel Gasification | No |
| Carbon Capture Technology | No |
| Solar Details | |
| Fixed Tilt | Yes |
|---|---|
| Azimuth Angle | 180 |
| Tilt Angle | 10 |
| DC Net Capacity | 0.66 MW |
| Crystalline Silicon | Yes |
| Net Metering Agreement | No |
| Virtual Net Metering Agreement | No |
Generator INV-2 Details Operating July 2016
| Technology | Solar Photovoltaic |
|---|---|
| Prime Mover | Photovoltaic |
| Ownership | Single Owner |
| Nameplate Capacity | 0.5 MW |
| Summer Capacity | 0.5 MW |
| Winter Capacity | 0.5 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
|---|---|
| First Operation Date | July 2016 |
| Combined Heat & Power | No |
| Sector Name | IPP Non-CHP (2) |
| Energy Source | Solar |
| Solid Fuel Gasification | No |
| Carbon Capture Technology | No |
| Solar Details | |
| Fixed Tilt | Yes |
|---|---|
| Azimuth Angle | 180 |
| Tilt Angle | 10 |
| DC Net Capacity | 0.66 MW |
| Crystalline Silicon | Yes |
| Net Metering Agreement | No |
| Virtual Net Metering Agreement | No |
Generator INV-3 Details Operating July 2016
| Technology | Solar Photovoltaic |
|---|---|
| Prime Mover | Photovoltaic |
| Ownership | Single Owner |
| Nameplate Capacity | 0.5 MW |
| Summer Capacity | 0.5 MW |
| Winter Capacity | 0.5 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
|---|---|
| First Operation Date | July 2016 |
| Combined Heat & Power | No |
| Sector Name | IPP Non-CHP (2) |
| Energy Source | Solar |
| Solid Fuel Gasification | No |
| Carbon Capture Technology | No |
| Solar Details | |
| Fixed Tilt | Yes |
|---|---|
| Azimuth Angle | 180 |
| Tilt Angle | 10 |
| DC Net Capacity | 0.66 MW |
| Crystalline Silicon | Yes |
| Net Metering Agreement | No |
| Virtual Net Metering Agreement | No |
Waihonu South Solar Plant Owners
| Owner Name | Address | Generator | Ownership | We couldn't locate any owners for this plant |
|---|
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Nearby Power Plants
Below are closest 20 power plants surrounding Waihonu South Solar.
| Plant Name | Plant Location | Annual Generation | Distance |
|---|---|---|---|
| AES West Oahu Solar Hybrid | Waipahu, HI | 19.6 GWh | 7.3 mi |
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| Kalaeloa Solar Two | Honolulu, HI | 7.9 GWh | 11.2 mi |
| Kawailoa Solar | Haleiwa, HI | 68.5 GWh | 11 mi |
| Kawailoa Wind | Haleiwa, HI | 90.0 GWh | 9.9 mi |
| Lanikuhana Solar LLC | Mililani, HI | 29.1 GWh | 2.8 mi |
| Mililani South Solar Farm | Mililani, HI | 59.2 GWh | 2.8 mi |
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| Waiawa Solar Power Hybrid | Waipahu, HI | 52.9 GWh | 4.5 mi |
| Waihonu North Solar | Mililani, HI | 7.5 GWh | 0.2 mi |
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| West Loch Solar One | Ewa Beach, HI | 39.9 GWh | 8.9 mi |