The line graph illustrates that the demand for electricity in England during a single day in summer and winter. The second pie chart indicates what the electricity is used for during the same period in an average English home.
It can be seen from the line graph that the demand for electricty during typical days is more than twice as much in winter as it is in summer,peaking at 45,000 units at 10 p.m. in winter while bottoming at 30,000 units at 8 a.m..On the other hand, in Summer,the demand for electricity peaks at 20,000 units at 2 p.m. and bottoms at 15,000 units at 9 a.m. in a day.《Overall,the bottoming demand in winter days and the peaking demand in winter evening come one hour earlier than the corresponding figures in summer.》
According to the pie chart,the electricity is mainly used in four sectors in an average English home. Over a half of electricity (52.5%) is used for heating rooms or water,which is about three times than that used for oven,kettles,washing machies.Likewise,it can greatly explain why the electricity use is dramatic high in winter.However,the percentage of the electricity utilization in lighting, TV, radio is equal to that in vacuum cleaners,food mixers,and electric tools (15%).
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