electricity cost per kwh
seattle area households paid an average of 10 2 cents per kilowatt hour kwh of electricity in august 2015 up from the 9 6 cents per kwh in august 2014 the average cost of utility piped gas at $ 1 250 per therm in august was higher than the $ 1 187 per therm spent last yearee chart 1 the 10 2 cents per kwh seattle households paid for electricity in august 2015 was 28 2 percent less than the nationwide average of 14 2 cents per kwh last august electricity costs were 32 9 percent lower in seattle compared to the nation