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.

Electric

  EC = power x usage_week x 52

              where:

               EC = Annual energy consumption in kWh

               power = energy consumption rate of the oven (kW)

               usage_week = 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).

Gas

EC = (oven_rate x usage_week x 52) + pilotLight

      where:

               EC = Annual energy consumption in therms

               oven_rate = energy consumption rate of the oven (therms/hour)

               usage_week = 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.

Variable Name	Range of possible Values	Default Value	unit
OvenFuel	Electric Gas	Depends on climate zone
Usage	0 – 10 hours	2	Hours/week