Avista can adjust rates once a year when the amount it budgeted to provide power is more or less than anticipated. This year, conditions have been good at its hydroelectric sites and wholesale natural gas prices have declined.
If the proposal is approved by the Idaho Public Utilities Commission, an average Idaho residential customer paying $80.55 per month for 939 kilowatt hours of electricity would see a drop of $1.09. An average residential customer using 60 therms a month of natural gas would pay $51.36, or $4.42 less than current rates.
If approved, the changes would take effect Oct. 1.