Taking a single airplane trip consumes an incredible amount of energy. Since the Boeing 747-400 is a common choice for flights we will use it to get a rough estimate. We will estimate that the aircraft holds 63,500 gallons of fuel and carries 415 passengers about 5,000 miles. Assuming that the fuel will get 38 kWh per gallon, it has been calculated that each passenger will consume 11,630 kWh on a full round trip. It’s reasonable to say that each person will take a flight once a year, and so we can come up with the value of about 32 kWh per day per person.
