The line chart illustrates the change in the daily demand for electricity in England during common days in winter and summer and overall the electricity consumption in cold season is twice higher than that in hot one. In winter, from 35,000 units at midnight, the demand for electricity increases to its peak at just blow 40,000 units at about 3 o’clock, before declining to the lowest point at a little over 30,000 units during the following 6 hours. However, the day saw a gradual growth, with about 44,000 consumed at about 21 o’clock, which is the highest amount in the whole day. In summer, its electricity is less fluctuated and more electricity is used during the time from 12-24 o’clock, during which time there are two peak at about 20,000 units at around 14 and 23 o’clock.