Quote:
Originally Posted by Thekilt
If you go up to a ski resort from the bottom, and regen back down again most of the time you dont actually use any energy as all the electricity used getting up is recovered coming down.
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Hang on just a moment...you appear to have just invented perpetual motion!
You might recover quite a bit (I don't know...maybe 50%?), but absolutely not all. The motor is not 100% efficient, and there's various forms of drag to consider.
cheers
James