State
Hawaii
Who serves its customers, 2025
| Kind of utility | Customers | Share of customers |
|---|---|---|
| Investor owned | 473,420 | 92.9% |
| Cooperative | 35,617 | 7.0% |
| Other | 490 | 0.1% |
Customers of full-service and energy-only providers, as EIA counts them; delivery-only customers are the same people, so they are not counted twice.
U.S. Energy Information Administration · Annual Electric Power Industry Report (Form EIA-861) · data for 2025 · as of Oct 7, 2026 · retrieved Oct 31, 2026 · CC-BY-4.0 May be out of date. The next release was due by Oct 7, 2027. Last checked for an update: Oct 31, 2026.
Average price by sector, 2025
| Sector | Average price (cents per kWh) |
|---|---|
| Residential | 40.40 |
| Commercial | 36.31 |
| Industrial | 31.45 |
Revenue from every kind of service over sales counted once, as EIA computes its state averages.
Capacity and generation by fuel
| Fuel | Capacity | Net generation in 2025 |
|---|---|---|
| Residual fuel oil | 1,206.7 MW | 5,420,028 MWh |
| Distillate fuel oil | 767.6 MW | 1,370,462 MWh |
| Solar | 578 MW | 952,932 MWh |
| Batteries | 516.9 MW | -42,228 MWh |
| Wind | 233.2 MW | 579,268 MWh |
| WO | 98.2 MW | 188,251 MWh |
| MSW | 97.3 MW | |
| OBL | 60.4 MW | 43,849 MWh |
| Geothermal | 51 MW | 207,927 MWh |
| Other | 39.1 MW | 189,240 MWh |
| Hydro | 33.6 MW | 70,279 MWh |
| AB | 9.3 MW | 28,570 MWh |
| PG | 0 MWh | |
| JF | 0 MWh | |
| KER | 0 MWh | |
| OG | 0 MWh | |
| MSB | 141,551 MWh | |
| MSN | 173,006 MWh | |
| Wood | 0 MWh |
Balancing authorities serving it: HECO, NA.
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Generator Report (Form EIA-860) · data for 2025 · as of Sep 10, 2026 · retrieved Oct 31, 2026 · CC-BY-4.0 May be out of date.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.
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Plant Operations Report (Form EIA-923) · data for 2025 · as of Sep 11, 2026 · retrieved Oct 31, 2026 · CC-BY-4.0 May be out of date.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.
Interconnection queue, as of the end of 2025
No active queue requests in this state at the end of 2025.
Lawrence Berkeley National Laboratory and GridTracker · Queued Up: Interconnection Queue Data File (Lawrence Berkeley National Laboratory) · data for 2025 · as of May 7, 2026 · retrieved Oct 31, 2026 · CC-BY-4.0 May be out of date. The next release was due by May 7, 2027. Last checked for an update: Oct 31, 2026.
Utilities
| Utility | Ownership, as EIA reports it | Customers | Sales (MWh) |
|---|---|---|---|
| Hawaiian Electric Co Inc | Investor Owned | 310,559 | 6,258,258 |
| Hawaii Electric Light Co Inc | Investor Owned | 90,899 | 1,062,790 |
| Maui Electric Co Ltd | Investor Owned | 71,962 | 1,102,336 |
| Kauai Island Utility Cooperative | Cooperative | 35,617 | 487,395 |
| Sunrun Inc. | Behind the Meter | 17,565 | 139,118 |
| Tesla Inc. | Behind the Meter | 4,738 | 53,085 |
| SunPower Capital, LLC | Behind the Meter | 1,082 | 3,859 |
| Spruce Finance | Behind the Meter | 481 | 4,889 |
| EverBright, LLC | Behind the Meter | 43 | 335 |
| Ahana Renewables, LLC | Behind the Meter | 16 | 2,303 |
| TerraForm US Energy Services, LLC | Behind the Meter | 6 | 1,511 |
| Sunnova | Behind the Meter | 0 | 0 |
| Adjustment 2025 | -23,441 | 62,799 |
A utility with too few reported figures for its own page is listed here with what it reported.
Power plants (84)
| Plant | County | Nameplate capacity | Operator |
|---|---|---|---|
| Kahe | Honolulu | 609.7 MW | Hawaiian Electric Co Inc |
| Waiau | Honolulu | 374.6 MW | Hawaiian Electric Co Inc |
| Kalaeloa Cogen Plant | Honolulu | 299.4 MW | Kalaeloa Partners LP |
| Maalaea | Maui | 229.8 MW | Maui Electric Co Ltd |
| Kapolei Energy Storage | Honolulu | 185 MW | Kapolei Energy Storage I, LLC |
| AES Maui Kuihelani Solar Hybrid | Maui | 120 MW | AES Distributed Energy |
| Ho'Ohana Solar 1 | Honolulu | 117.3 MW | Ho'Ohana Solar 1 LLC |
| Campbell Industrial Park | Honolulu | 113 MW | Hawaiian Electric Co Inc |
| H Power | Honolulu | 100.2 MW | Covanta Honolulu Resource Recovery |
| Port Allen (HI) | Kauai | 89.5 MW | Kauai Island Utility Cooperative |
| Keahole | Hawaii | 89.1 MW | Hawaii Electric Light Co Inc |
| Mililani South Solar Farm | Honolulu | 78 MW | Mililani I Solar LLC |
| Hale Kuawehi Solar Hybrid | Hawaii | 74 MW | Hale Kuawehi Solar LLC |
| Waiawa Solar Power Hybrid | Honolulu | 72 MW | Waiawa Solar Power LLC |
| Kawailoa Wind | Honolulu | 69 MW | Kawailoa Wind LLC |
| Hamakua Energy Plant | Hawaii | 66 MW | Hamakua Energy LP |
| AES Waikoloa Solar Hybrid | Hawaii | 60 MW | AES Distributed Energy |
| Puna Geothermal Venture I | Hawaii | 51 MW | Puna Geothermal Venture |
| Schofield Generating Station | Honolulu | 50.4 MW | Hawaiian Electric Co Inc |
| Kawailoa Solar | Honolulu | 49 MW | Kawailoa Solar, LLC |
| Waipio Solar | Honolulu | 45.9 MW | Waipio PV, LLC |
| AES Lawai Solar Hybrid | Kauai | 40 MW | AES Distributed Energy |
| Kapaia Power Station | Kauai | 39.1 MW | Kauai Island Utility Cooperative |
| Puna | Hawaii | 39.1 MW | Hawaii Electric Light Co Inc |
| W H Hill | Hawaii | 37.1 MW | Hawaii Electric Light Co Inc |
| Auwahi Wind Energy Hybrid | Maui | 35 MW | Auwahi Wind Energy LLC |
| Kahului | Maui | 34 MW | Maui Electric Co Ltd |
| Kaheawa Wind Power II LLC | Maui | 31 MW | Evergreen Wind, LLC |
| Kaheawa Pastures Wind Farm Hybrid | Maui | 30 MW | Evergreen Wind, LLC |
| Kahuku Wind Power LLC | Honolulu | 30 MW | Evergreen Wind, LLC |
| EE Waianae Solar Project | Honolulu | 28.3 MW | EE Waianae Solar Project LLC |
| AES Kekaha Solar, LLC Hybrid | Kauai | 28 MW | AES Distributed Energy |
| KIUC Kapaia PV and BA Storage Project Hy | Kauai | 28 MW | Tesla Inc. |
| Na Pua Makani Wind Project | Honolulu | 27.6 MW | Na Pua Makani Power Partners LLC |
| AES West Oahu Solar Hybrid | Honolulu | 25 MW | AES Distributed Energy |
| Kanoelehua | Hawaii | 21 MW | Hawaii Electric Light Co Inc |
| Pakini Nui Wind Farm | Hawaii | 21 MW | Apollo Energy Corp |
| Tesoro Hawaii | Honolulu | 20 MW | PAR Petroleum |
| West Loch Solar One | Honolulu | 20 MW | Hawaiian Electric Co Inc |
| Palaau Power Hybrid | Maui | 17.1 MW | Maui Electric Co Ltd |
| Lanikuhana Solar LLC | Honolulu | 14.7 MW | Lanikuhana Solar LLC |
| Hawaii Cogen | Honolulu | 12.2 MW | Island Energy Services |
| KRS I Anahola Solar Hybrid | Kauai | 12 MW | Kauai Island Utility Cooperative |
| KRS II Koloa Solar | Kauai | 12 MW | Kauai Island Utility Cooperative |
| Waipio Peninsula | Honolulu | 11 MW | Pacific Energy Solutions, LLC |
| Hawi Wind Farm | Hawaii | 10.6 MW | EDF Renewable Asset Holdings, Inc. |
| Wailuku River Hydroelectric | Hawaii | 10.4 MW | Wailuku Holding Company LLC |
| Miki Basin | Maui | 10.4 MW | Maui Electric Co Ltd |
| Biomass to Energy Facility, Kauai | Kauai | 10.3 MW | Mahipapa LLC |
| HNL Emergency Power Facility | Honolulu | 10 MW | Hawaiian Electric Co Inc |
| Gay Robinson | Kauai | 8.7 MW | Gay & Robinson Inc |
| Waimea | Hawaii | 7.5 MW | Hawaii Electric Light Co Inc |
| Port Allen Solar | Kauai | 6 MW | Ka Ie Ie Waho Company, LLC |
| Aloha Solar Energy Fund 1 PK1 | Honolulu | 5 MW | Altus Power America Management, LLC |
| BYU - Hawaii | Honolulu | 5 MW | SkyHigh 2 Solar |
| Kalaeloa Renewable Energy Park | Honolulu | 5 MW | ENI New Energy US Inc |
| Kalaeloa Solar Two | Honolulu | 5 MW | Altus Power America Management, LLC |
| Waihonu North Solar | Honolulu | 5 MW | ERCAM LLC |
| Kaheka Hydro | Maui | 4.5 MW | Mahi Pono LLC |
| Wainiha Hydro | Kauai | 3.6 MW | BBCP Kauai Operating LLC |
| Mauka FIT One | Honolulu | 3.5 MW | Valta Energy |
| Puueo | Hawaii | 3.1 MW | Hawaii Electric Light Co Inc |
| Kihei Solar Farm | Maui | 2.9 MW | South Maui Renewable Resources LLC |
| Ku'ia Solar | Maui | 2.9 MW | Ku'ia Solar LLC |
| Hana Substation | Maui | 2 MW | Maui Electric Co Ltd |
| Kalaheo Hydro | Kauai | 2 MW | BBCP Kauai Operating LLC |
| BRE - Ritz Carlton Kapalua | Maui | 1.5 MW | Onyx Asset Services Group |
| Waihonu South Solar | Honolulu | 1.5 MW | ERCAM LLC |
| Mauna Loa Macadamia Nut | Hawaii | 1.3 MW | Macadamia Nut Road Solar Project 2019 |
| Paia Hydroelectric Plant | Maui | 1.3 MW | Mahi Pono LLC |
| Lanai Solar-Electric Plant | Maui | 1.2 MW | Lanai Sustainability Research LLC |
| Kapaa Photovoltaic Project | Kauai | 1 MW | Kapaa Solar LLC |
| Kapolei Solar Energy Park | Honolulu | 1 MW | Altus Power America Management, LLC |
| Kuihelani Substation | Maui | 1 MW | Maui Electric Co Ltd |
| Pearl City Peninsula Solar Park | Honolulu | 1 MW | Altus Power America Management, LLC |
| Waiau Hydro | Hawaii | 1 MW | Hawaii Electric Light Co Inc |
| AES Mountain View Solar | Honolulu | 0 MW | AES Distributed Energy |
| AES Waiawa Phase 2 Solar | Honolulu | 0 MW | AES Distributed Energy |
| Hu Honua Bioenergy Facility | Hawaii | 0 MW | Hu Honua Bioenergy, LLC |
| Kalaeloa Home Lands Solar | Honolulu | 0 MW | Pivot Energy |
| Keamuku | Hawaii | 0 MW | AES Clean Energy |
| Kuihelani Phase 2 | Maui | 0 MW | AES Clean Energy |
| Puuloa Energy | Honolulu | 0 MW | Puuloa Energy LLC |
| Puuloa Solar | Honolulu | 0 MW | Puuloa Solar LLC |