Hawai'i households will pay less for electricity they use in April as rates fall from March levels because of lower crude oil prices.

Hawaiian Electric Co. said the typical 600-kilowatt-hour residential bill on O'ahu will decline to $117.94 from $118.71 in March.

The effective rate for electricity in Honolulu will drop to 18.23 cents per kilowatt-hour from the 18.3 cent rate that it charged in March.

HECO said the O'ahu rate is the lowest since the summer of 2007.

Elsewhere in the state, electricity rates fell after an uptick in February.

• Maui customers will see their rates drop to 22.01 cents from 23.2 cents in March.

• Big Island residential rates will fall to 28.82 cents from 30.8 cents.

• Kaua'i Island Utility Cooperative's April rate is 22.37 cents, down from 23.1 cents.

Electricity rates spiked in Hawai'i last year because most of it is produced using petroleum products such as fuel oil or diesel oil. On O'ahu, rates peaked in Sept-ember when residential customers paid an average of $202.13 for their monthly bill.