72 kW is 1/19th of a percent of the output of a 747 (140MW). More to the point, 240W is irrealistic for a laptop. Most laptops consume under 40W. With this bet

72 kW is 1/19th of a percent of the output of a 747 (140MW). More to the point, 240W is irrealistic for a laptop. Most laptops consume under 40W. With this better estimation, this is 1/117th of a percent.