Factoring in gravity isn't good physics or engineering. Gravity's effect is negligible in a generator placement in a skyscraper
replyI think it was a joke?
replySomething something sarcasm can neither be created nor destroyed
replyNo joke - have you ever tried to siphon electricity? Can't do it more than 35 feet or so. You'll be boiling off your electrons into a plasma by the time you get to that height.
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replyCarrying the diesel fuel up 18 flights of stairs also enhances its potential energy. About 47 Joules per foot.
replyYou get out of it what you put into it. ;)