basically spinning wind turbines
my thought was, the subway turnstile spins a lot more than wind blows, from people going in and out of the subway, so you could get electricity out of it the same way
pic for some reason
of course it would need some heavy engineering since they are like slanted fans instead of straight, and there might not be enough room for generator, although the wind turbines look like they have a fairly small one
im probably just rambling, anyways discuss
(concept idea by me)
Edited by TheOriginalBelthagor, 11 June 2012 - 07:23 PM.