Interesting article, but a whopping quarter of kilowatt to every seat? Isn't that a bit overkill? Assuming that typical laptop charger drinks 80 joules of energ

Interesting article, but a whopping quarter of kilowatt to every seat? Isn't that a bit overkill? Assuming that typical laptop charger drinks 80 joules of energy per second at most, and since laptops luckily have built-in energy sources for couple of hours, the power output could be time-divided, eg. every output is powered half of the time in 30 minute intervals. Assuming not everyone needs power at all, two power outputs per three seats should be enough. Suddenly we have reduced the needed peak power to 1/9th of the original!