1Cost for Electricity quoted at $05.794 per kWh (for first 600 kWh), then at $06.9 per kWh for up to 700 additional kWh, and cost of $08.254 per kWh for all electricity over 1300 kWh, quoted by Avista Utilities. Chart uses average of 700 kWh. 2Cost for Natural Gas quoted at $.85 per therm (at the meter) by Avista Utilities. 3Cost for No. 2 Heating Oil based on average cash price for minimum delivery of 150 gallons, (updated 10/10/2011). 4Cost for Liquid Propane based on cash price and minimum delivery of 120 gallons.