Electricity rates — Hawaiian Electric Co Inc

What a typical bill costs

At 1,000 kWh a month the 4 generally available plans here run from $4,214.40 on SCHEDULE ARD TOU R - Residential Time of Use - Single Phase to $4,719.60 on SCHEDULE R RESIDENTIAL SERVICE - Three Phase, with a median of $4,406.88.

Effective rates, bill divided by kilowatt-hours, span 35.1¢ to 39.3¢ per kWh at that usage.

What Hawaiian Electric Co Inc's customers were billed in 2024

At 454 kWh a month, Hawaiian Electric Co Inc's median open plan comes to 38.7¢ per kWh, 10% below the 42.9¢ its customers were billed in 2024, riders included. Rates set since 2024 account for some of that.

How it compares

Among the 109 utilities indexed, Hawaiian Electric Co Inc's cheapest open plan is the 4th-highest, 2.6× as much as their median of $1,649.16. It sits between Southern California Edison Co ($3,742.62) and Mississippi Power Co ($4,386.94).

Its fixed charge, $21.26 a month on SCHEDULE ARD TOU R - Residential Time of Use - Single Phase, is higher than on the cheapest plan of 84 of the other 108 utilities.

SCHEDULE R RESIDENTIAL SERVICE - Single Phase is tiered: past 1,200 kWh a month, each kWh costs 2.3¢ more. Of the 51 utilities whose plans step, that is the 19th-largest step.

In the guides: What a bill costs before a single kilowatt-hour · The price that changes once the meter passes a line

How the answer changes with usage

SCHEDULE ARD TOU R - Residential Time of Use - Single Phase is cheapest at every level tested — $2,234.76 a year at 500 kWh a month, $8,173.56 at 2,000 kWh.

The penalty for a poor choice grows with usage: $253.56 a year at 500 kWh against $1,227.00 at 2,000 kWh.

Cheapest 6 plans at 1,000 kWh a month

SCHEDULE R RESIDENTIAL SERVICE - Single Phase Low Income Provision — $3,295.32 a year, 27.5¢ per kWh effective, tiered. It carries a $10.27 monthly standing charge. In effect since April 2017. Too old to quote as a current price.

SCHEDULE R RESIDENTIAL SERVICE - Three Phase Low Income Provision — $3,403.32 a year, 28.4¢ per kWh effective, tiered. It carries a $19.27 monthly standing charge. In effect since April 2017. Too old to quote as a current price.

SCHEDULE ARD TOU R - Residential Time of Use - Single Phase — $4,214.40 a year, 35.1¢ per kWh effective, time-of-use. It carries a $21.26 monthly standing charge. In effect since March 2026.

SCHEDULE ARD TOU R - Residential Time of Use - Three Phase — $4,225.08 a year, 35.2¢ per kWh effective, time-of-use. It carries a $22.15 monthly standing charge. In effect since March 2026.

SCHEDULE R RESIDENTIAL SERVICE - Single Phase — $4,588.68 a year, 38.2¢ per kWh effective, tiered. It carries a $15.41 monthly standing charge. In effect since March 2026.

SCHEDULE TOU-R RESIDENTIAL TIME-OF-USE SERVICE - Single Phase - Closed Rate — $4,625.38 a year, 38.5¢ per kWh effective, tiered and time-of-use. It carries a $14.23 monthly standing charge. In effect since May 2023. Too old to quote as a current price.

How these plans are structured

Of 8 priceable plans: 6 tiered, 4 time-of-use.

Fixed monthly charges run from $10.27 to $26.32.

Who provides these plans

EIA-861 lists Hawaiian Electric Co Inc serving homes in Hawaii and in no other state, which is how its plans are placed there. 8 of its 8 published residential schedules can be priced.

The largest saving available here

Moving from SCHEDULE R RESIDENTIAL SERVICE - Three Phase to SCHEDULE ARD TOU R - Residential Time of Use - Single Phase saves $505.20 a year at 1,000 kWh a month, with no change in consumption.

What this does not cover

4 of these plans price by the hour, so their figures are marked lower confidence.