Assessment of Household Electricity Consumption Based on the Power Ratings of Energy-Efficient Appliances

This research examines electricity use in households based on how much electricity will be consumed due to the watt ratings of various energy saving home appliances and how they operate while plugged in, in standby mode, and after they have been turned off over time. For this analysis, a representative set of common residential electric appliances was used: heating appliances; lighting appliances; kitchen appliances; cooling appliances; and computer appliances. For each of the electric appliances in each of the three modes of operation for each of the electric appliances, daily and annual electricity use values were calculated based on their wattage rating. The analysis showed that the total electricity demand of a home is determined by both the wattage of each appliance as well as how long the appliance is operated in each mode. When reviewing the electric appliances, the thermal appliances (electric heaters, electric stoves, electric water heaters) produced the highest total of electricity used by households, and in contrast, the appliances that had the greatest annual electricity consumption were the refrigerator/air conditioner and computers as they were used for extended periods of time. On the other hand, the appliances that consumed the least amount of electricity annually were the lighting products, specifically LED lighting products, which demonstrate a significant amount of potential energy reduction.

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