Define the average person. I use about 500 units per month on average through the year.
How much electrical energy does the average person use in a day . . . In the UK the figure is about 16 kilowatt hours.
if we talking about personal use in normal situation 50 kilowatt per day
a average person uses about 5.7 kWh per day
Look at your electric bill; it will show how many Kwatts you use.