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Use the smart energy tabs in Account Manager to compare your energy use with the average temperatures for your area.
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Perhaps the largest influence on your home’s energy usage is the weather. When it’s cold in the winter and your heating system runs, or when it’s hot in the summer and your air conditioning runs, your bill will be higher. Your bill is at its lowest in May and October, because you typically use less energy then. Using the tools below, you can learn about average temperatures and compare these to your energy usage.
Find the Average Temperature for Your Billing Period:
Find the Billing Period listed on your bill under Residential Service Information, and select the starting and ending dates using the fields below to view the average temperature for your billing period.
(All temperatures shown here are in Fahrenheit.)
Average Temperatures by Month:
Compare the graph of the temperatures below to the graph on your bill that shows your energy usage over the past year.
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Heating and Cooling Degree Days:
Heating degree days and cooling degree days measure variations in the weather and can be used to estimate the amount of energy needed to heat or cool a building. For Southern Maryland, degree days are based on the difference between the daily average temperature and 65 degrees. If the average temperature is 40 degrees on a winter day, then the heating degree days would be 25 (65 - 40 = 25). Similarly, if the average temperature for a summer day is 80, then the cooling degree days would be 15 (80 - 65 = 15).
The chart below shows the heating and cooling degree days for the past 12 months. As the heating and cooling days increase, your heating and cooling systems run more and your electric bill will increase.
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