In the Home Energy Saver, users are allowed to select either an electric and gas oven. The following equations describe the method used to calculate energy consumption by ovens.
EC = power x usageweek x 52
where:
EC = Annual energy consumption in kWh
power = energy consumption rate of the oven (kW)
usageweek = hours of use per week
52 = weeks per year
For electric ovens, the power consumed is assumed to be 2.3 kW for the purposes of this model (PG&E 1995).
EC = (oven_rate x usageweek x 52) + pilotLight
where:
EC = Annual energy consumption in therms
oven_rate = energy consumption rate of the oven (therms/hour)
usageweek = hours of use per week
52 is weeks per year
pilotLight = energy consumed by the pilot light (therms/year)
For gas ovens, the energy consumed is assumed to be 0.11 therms/hour and pilot light consumption is 17 therms/year (PG&E 1995). The default usage for all ovens is assumed to be 2 hours per week, regardless of oven fuel.
Users are able to alter the inputs for stoves and ovens only in the detailed inputs model. The table below details the initial assumptions used for calculating stove and oven energy.