Energy Consumption of Electric Ovens

Written by eoghan mccloskey
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Energy Consumption of Electric Ovens
Calculating the energy usage of an electric oven can help you make informed purchasing decisions. (Hemera Technologies/ Images)

When purchasing a new appliance for the home, there are always two price tags to consider. There is the initial purchase cost of an appliance. An appliance that is cheaper to buy upfront may be more expensive to operate in terms of energy costs. Conversely, spending more on an energy-efficient appliance can yield long-term savings in energy costs. Calculate the energy usage of a home appliance such as an electric oven.

Difficulties in Calculation

Calculating energy usage is far from an exact science. Accurate measurements are difficult to determine since the amount of energy used depends on numerous unique factors, including the type of energy being consumed, the manner in which the oven is used, the condition of the oven and other factors. Still, the concerned homeowner should not be intimidated; even after taking these variables into consideration, calculating the energy consumption of your electric oven can be informative.

Average Usage Estimations

The average energy consumption of an electric oven is about 2 kilowatts per hour, or about 16 cents per hour, according to the California Energy Commission Consumer Energy Center. The federal Energy Information Administration calculates that electric ovens account for about 21 billion kilowatt hours of energy usage in the country, or about 1.8 per cent of all total energy consumption by household appliances in the country.

Calculating on Your Own

Due to the aforementioned difficulty in estimating energy usage by all-electric oven, it may be more useful to calculate the energy usage of your electric oven with a simple mathematical formula. You will need to know the price per kilowatt hour that your utility company charges (printed on your utility bill), the "draw" in wattage that your oven uses when running (printed on the oven's documentation) and approximate number of hours per day your oven is used.

Example Calculation

For instance, if you estimate that your household uses the oven six times a week for, on average, an hour and a half at a time, and if you know that your utility company charges 8 cents per kilowatt hour, you can calculate energy consumption by multiplying 800 watts (the oven's draw) by 9 to find that the oven uses 7,200 watts of electricity per week. Multiply this number by the price your utility company assesses to see that the oven uses about 57 cents worth of energy per week or around £19.2 in energy costs per year. (See References 3 for more information on this calculation method.)

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