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Wind power could be much cheaper?
A new 2000W vacuum cleaner costs 50e. If we couple a vacuum cleaner in reverse, it works as a generator.

Let's assume that this generator lasts 1 year. It produces 2kW*8600h = 17 MWh. So the costs are 50e/17MWh = 3 e/MWh.

by kjr63 on Wed Mar 2nd, 2011 at 01:35:34 PM EST
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