38.43¢
per kWh, 2025
[ Kauai Island Utility Cooperative / HI ]
Kauai Island Utility Cooperative electricity rates in Hawaii
NO RATE CASE ON FILE · DATA 2025
change in average rate, 2024→2025
−6.9%
vs 2024
30,335
residential customers
+14.0%
since 2020
What your bill becomes
Bill today
No change on file
Difference / month · / year
Estimated at Kauai Island Utility Cooperative's average effective residential rate (38.43¢/kWh, EIA, all charges included). Your tariff, fees and taxes differ.
Rate history 2015–2025
| Year | ¢/kWh | Change | Customers |
|---|---|---|---|
| 2015 | 34.30¢ | — | 28,658 |
| 2016 | 34.03¢ | −0.8% | 28,574 |
| 2017 | 34.52¢ | +1.4% | 28,766 |
| 2018 | 37.30¢ | +8.1% | 28,961 |
| 2019 | 34.87¢ | −6.5% | 29,195 |
| 2020 | 33.70¢ | −3.4% | 29,510 |
| 2021 | 36.33¢ | +7.8% | 29,803 |
| 2022 | 39.31¢ | +8.2% | 29,936 |
| 2023 | 37.54¢ | −4.5% | 30,025 |
| 2024 | 41.29¢ | +10.0% | 30,109 |
| 2025 | 38.43¢ | −6.9% | 30,335 |
How this compares
40.40¢
Hawaii average, 2025
−4.9%
Kauai Island Utility Cooperative vs HI 2025 average
+123.0%
vs US 2025 average
#4
priciest in HI
Serves 1 county in Hawaii: Kauai. 17 ZIP codes.
Questions
Is Kauai Island Utility Cooperative raising rates in 2026?
No rate case for Kauai Island Utility Cooperative is on file with the Hawaii Public Utilities Commission in our tracker. Its average residential rate moved −6.9% from 2024 to 2025. We check the commission docket monthly.
What does Kauai Island Utility Cooperative charge per kWh?
Kauai Island Utility Cooperative's average effective residential rate was 38.43¢ per kWh in 2025 (EIA-861, revenue divided by sales, all charges included). Hawaii's 2025 average was 40.40¢.
How much have Kauai Island Utility Cooperative rates gone up in five years?
+14.0% between 2020 and 2025, against +43.4% for Hawaii as a whole over the latest five-year window.
How many customers does Kauai Island Utility Cooperative have in Hawaii?
30,335 residential customers in 2025, across 1 county including Kauai, according to the EIA-861 survey.
Where do these numbers come from?
Rates and customer counts are from the US Energy Information Administration's annual EIA-861 survey; rate-case facts are from the Hawaii Public Utilities Commission docket linked on this page. Nothing here is a utility bill; use it to understand the direction and size of changes.
Sources
- EIA-861 Sales to Ultimate Customers, 2015–2025 (released 2026-10-07)
- EIA-861M monthly state averages through Jul 2026
- NREL utility-by-ZIP lookup (2024)