That would be Hawaii. The state's electricity prices — the highest in the U.S. — are nearly three times higher than the national average of $0.1284 per kilowatt-hour.Hawaii's electricity price of $0.37 per kilowatt-hour equates to a $334 monthly electricity bill for the average consumer, according to calculations based on EIA data.That comes out to more than $4,000 per year spent on electricity.hat would be Hawaii. The state's electricity prices — the highest in the U.S. — are nearly three times higher than the national average of $0.1284 per kilowatt-hour.