I had an idea with storing water which I would love to build someday. The idea starts with a wind turbine which does not need to be very large at all. This would pump water up (into storage somewhere). Alternatively, a bike or any other form of energy which results in rotation could pump the water up (treadmills, playground equip, or just a hand pump). Then, when power is needed, a microhydro type of rotational energy collection could be used - on demand - as long as there is water with potential energy. I think this has some interesting benefits since it could use clean materials mostly. Since the water flow would be constant when needed, a specific power output would be possible, which may eliminate the need for batteries. As much as I like solar and wind power, I still see some non-sustainable aspects to using batteries to store the power, which this system *may* be able to avoid while still producing consistent electricity. -Andy _______________________________________________ For more information about sustainability in the Tompkins County area, please visit: http://www.sustainabletompkins.org/
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