Calculating Machine Energy

The machine energy is the electrical energy consumed by all the physical processes necessary to run a load of laundry (e.g. agitation, spin cycle), and is calculated using Equation 13.

ME = LE x loads x 52           Equation 13

          where

            LE = load energy (kWh/load)

            loads = clothes washer loads/week

            52 is weeks/year

Machine energy for the average new clothes washer has not changed significantly over time, so is assumed to be 0.23 kWh/load for the purposes of this model (DOE 1990, Page 3-22 table 3.17).