States › Hawaii › Kauai Island Utility Cooperative
electric cooperative · EIA utility 10071
Kauai Island Utility Cooperative
Average price is revenue divided by sales for the sector and year; it is not a tariff rate. Reliability figures are as reported by utilities to EIA on Form 861 and may use different calculation methods. Annual figures: Form EIA-861 for 2024, final release. Monthly state figures run to July 2026.
In its Form EIA-861 filing for 2024, Kauai Island Utility Cooperative, an electric cooperative, reported 30,109 residential customers in Hawaii, with a service territory that touches 1 county.
Its average residential price that year was 41.29¢ per kilowatthour, 3.7% below the Hawaii average of 42.86¢ and 151% above the US average of 16.48¢. The figure is residential revenue divided by residential sales, so it folds in fixed charges, riders and every rate schedule the utility bills under.
That works out to an average residential bill of $221.37 a month on average use of 536 kWh a month. Across Hawaii the average bill was $212.12 on 495 kWh, so a bill gap reflects how much power households use as well as what each kilowatthour costs.
For reliability it reported a SAIDI of 382.6 minutes per customer with major event days included and 219.3 minutes with them excluded, calculated under IEEE 1366 standard. The median among Hawaii utilities reporting was 385.0 minutes with major event days; this utility's figure is about the same as that median.
The average price is up 18.4% on 2019, against up 33.7% for Hawaii as a whole, and up 10.0% on 2023. EIA's early release for 2025, which has not been fully edited, shows 38.43¢.
Compared with Hawaii, the US and other electric cooperatives
| Measure, 2024 | This utility | Electric cooperatives, US median | Hawaii | United States |
|---|---|---|---|---|
| Average residential price per kWh | 41.29¢ | 13.74¢ | 42.86¢ | 16.48¢ |
| Average monthly residential bill | $221.37 | $149.95 | $212.12 | $142.26 |
| Average monthly use, kWh | 536 | 1,126 | 495 | 863 |
| Residential price change, 1 year | +10.0% | — | +1.1% | +3.0% |
| Residential price change, 5 years | +18.4% | — | +33.7% | +26.7% |
| SAIDI, all events (minutes) | 382.6 | 263.0 | 385.0 median | 184.5 median |
| SAIDI, without major event days | 219.3 | 147.0 | 253.3 median | 99.8 median |
State and US prices, bills and use are EIA's own averages over every customer. The ownership column and the reliability columns are medians across utilities with at least 1,000 residential customers, computed on this site from the final 2024 file. In Hawaii this utility's price ranks 4 of 4, counting from the highest.
Average price by year
Kauai Island Utility CooperativeHawaii averageUS average
Year by year
| Year | ¢ per kWh | Hawaii ¢ | Monthly bill | kWh a month | Residential customers | All sales |
|---|---|---|---|---|---|---|
| 2025 early release | 38.43¢ | 40.59¢ | $212.58 | 553 | 30,335 | 487.4 GWh |
| 2024 | 41.29¢ | 42.86¢ | $221.37 | 536 | 30,109 | 472.5 GWh |
| 2023 | 37.54¢ | 42.39¢ | $202.05 | 538 | 30,025 | 466.4 GWh |
| 2022 | 39.31¢ | 43.03¢ | $210.08 | 534 | 29,936 | 458.1 GWh |
| 2021 | 36.33¢ | 33.49¢ | $189.20 | 521 | 29,803 | 435.2 GWh |
| 2020 | 33.70¢ | 30.28¢ | $168.64 | 500 | 29,510 | 415.3 GWh |
| 2019 | 34.87¢ | 32.06¢ | $180.40 | 517 | 29,195 | 460.7 GWh |
| 2018 | 37.30¢ | 32.47¢ | $187.52 | 503 | 28,961 | 451.1 GWh |
| 2017 | 34.52¢ | 29.50¢ | $169.35 | 491 | 28,766 | 445.1 GWh |
| 2016 | 34.03¢ | 27.47¢ | $162.70 | 478 | 28,574 | 439.1 GWh |
| 2015 | 34.30¢ | 29.60¢ | $161.42 | 471 | 28,658 | 432.1 GWh |
| 2014 | 43.01¢ | 37.04¢ | $200.03 | 465 | 28,520 | 429.9 GWh |
| 2013 | 44.26¢ | 36.98¢ | $205.34 | 464 | 28,355 | 431.5 GWh |
Bundled residential service only in the price, bill and use columns. Bill = residential revenue ÷ customers ÷ 12; use = residential sales ÷ customers ÷ 12. EIA describes its early release as not fully edited; it is shown for this utility alone and enters no average, median or rank on this site.
Month by month
Kauai Island Utility CooperativeHawaii average
Sales by sector, 2024
| Sector | Customers | Sales | Share of sales | Revenue | ¢ per kWh, bundled |
|---|---|---|---|---|---|
| Residential | 30,109 | 193.7 GWh | 41% | $79,983,400 | 41.29¢ |
| Commercial | 5,094 | 118.2 GWh | 25% | $49,287,100 | 41.69¢ |
| Industrial | 113 | 160.5 GWh | 34% | $59,535,500 | 37.09¢ |
Customers, sales and revenue count every service type the utility reported (bundled, energy-only and delivery-only). The price column uses bundled service alone, because part-bill revenue would understate it. Sources of energy: 495.8 GWh in total, of which 55.1% was its own net generation and 222.4 GWh was bought wholesale; summer peak demand 82 MW.
Reliability
Minutes of sustained interruption per customer in 2024, as the utility reported them under IEEE 1366 standard. SAIFI: 4.39 interruptions per customer with major event days, 2.39 without; CAIDI 87.2 minutes per interruption. EIA's Hawaii total across all reporting utilities was 320.6 minutes with major event days and 225.6 without. Major event days are storms and similar events that a utility's chosen method sets apart; methods differ, so treat comparisons as approximate. What SAIDI and SAIFI mean.
| Year | SAIDI, all events | SAIDI, no major events | SAIFI, all events | SAIFI, no major events | Method |
|---|---|---|---|---|---|
| 2025 early release | 335.4 | 202.0 | 3.45 | 2.36 | IEEE 1366 |
| 2024 | 382.6 | 219.3 | 4.39 | 2.39 | IEEE 1366 |
| 2023 | 248.8 | — | 3.92 | — | IEEE 1366 |
| 2022 | 97.1 | 0.0 | 2.02 | 0.00 | Other |
| 2021 | 77.6 | — | 2.41 | — | Other |
| 2020 | 57.4 | — | 1.34 | — | Other |
| 2019 | 354.4 | — | 7.05 | — | Other |
| 2018 | 110.1 | — | 3.09 | — | Other |
| 2017 | 228.4 | — | 5.75 | — | Other |
| 2016 | 62.5 | — | 3.63 | — | Other |
| 2015 | 355.0 | — | 6.28 | — | Other |
| 2014 | 104.0 | — | 2.70 | — | Other |
| 2013 | 118.0 | — | 3.00 | — | Other |
Generation at plants it operates, 2025
- Other 61.3% 189.2 GWh
- Petroleum 25.8% 79.7 GWh
- Solar 12.9% 39.7 GWh
Net generation of 308.7 GWh at power plants this utility operates, from Form EIA-923. It is not the mix delivered to customers: utilities also buy power wholesale (222.4 GWh in 2024), sell generation to others and may co-own plants that another company operates.
Counties in its service territory
Counties the utility listed on Form EIA-861 for 2024. Listing a county does not mean the utility serves all of it.
Other utilities in Hawaii
| Utility | Ownership | Residential customers | ¢ per kWh | Monthly bill | SAIDI, all events | SAIDI, no major events |
|---|---|---|---|---|---|---|
| Maui Electric Co Ltd | Investor-owned | 61,811 | 43.96¢ | $214.62 | 387.4 | 287.2 |
| Hawaii Electric Light Co Inc | Investor-owned | 78,386 | 48.31¢ | $219.77 | 539.8 | 364.5 |
| Hawaiian Electric Co Inc | Investor-owned | 276,206 | 42.87¢ | $194.71 | 234.3 | 171.6 |
All Hawaii utilities · Electric cooperatives nationwide
Questions and answers
How much does electricity cost from Kauai Island Utility Cooperative?
Residential customers paid an average of 41.29¢ per kilowatthour in 2024. EIA derives this by dividing residential revenue by residential sales; it is an average across all rate schedules and charges, not a tariff rate.
How does that compare with Hawaii?
The Hawaii average residential price in 2024 was 42.86¢ and the US average 16.48¢; Kauai Island Utility Cooperative was 3.7% below the state figure. Among 4 utility filings with a bundled residential price in Hawaii, it had the 4th highest.
What is the average Kauai Island Utility Cooperative bill?
$221.37 a month in 2024, on average residential use of 536 kWh a month (annual revenue and sales divided by customers and by twelve). The Hawaii average was $212.12 on 495 kWh.
How reliable is Kauai Island Utility Cooperative service?
It reported 382.6 minutes of interruption per customer (SAIDI) including major event days and 219.3 minutes excluding them, with 4.39 interruptions per customer (SAIFI) in 2024. Utilities calculate these under differing methods, so comparisons are approximate.
Is the Kauai Island Utility Cooperative price rising?
The average residential price was up 10.0% in 2024 compared with 2023 and up 18.4% compared with 2019. EIA's early, not fully edited release for 2025 shows 38.43¢.
Which counties does Kauai Island Utility Cooperative serve?
Its Form EIA-861 service territory lists 1 county: Kauai County, HI. A county can appear in several utilities' territories.
Provenance
Source: U.S. Energy Information Administration. Annual figures are from Form EIA-861 (sales to ultimate customers, reliability, operational data and service territory files), final release for 2024, respondent "Kauai Island Utility Cooperative", utility number 10071; the 2025 row is from EIA's early release. Monthly utility figures are from the Form EIA-861M sample. State and US averages are from the Form EIA-861M sales and revenue workbook, published through July 2026. Generation by fuel is from Form EIA-923, 2025 final. All are US government works in the public domain. Page built 1 Oct 2026. Errors in processing are corrected at the next build; see corrections. For tariffs and rate schedules, consult the utility or the state utility commission.