Almost all of Hawaii's residents are paying less for their electricity this month than in July, with the exception of the island of Kauai, where rates actually increased, the Star Advisor reports.

According to the media outlet, Hawaiian Electric Co. announced that the normal household bill for 600 kilowatt hours in Oahu dropped by $1.20 to $$215.65 in August, compared with $216.85 in July. In Honolulu, the effective rate for electricity fell to 34.5 cents per kilowatt hour, compared with 34.7 cents in July.

The savings were seen all over the state, with Maui Electric Co. customers experiencing a decline to 35.4 cents per kilowatt hour from 37.5 cents last month, resulting in an average Maui energy bill to be about $221.30.

On the far island of Kauai, electricity rates rose to 40 cents per kilowatt hour, compared to the 38.4 cents per kilowatt hour charged by the Kauai Island Utility Cooperative.

In states with energy deregulation laws, such as Texas, Pennsylvania and Maryland, when utilities raise their prices, customers have the option to switch energy providers if a better rate plan is available.