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Old 08-31-10, 10:54 PM   #9
nibs
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If you have a running stream available you can build a very inexpensive micro hydro unit that will not degrade the stream. eg a 6hp outboard propellor on a shaft immersed in a stream of 5knot water will generate around 100 watts (that is from 1983 info so it may be more), fish can swim around it and it needs no diversion of water, given sufficient volume of stream water.
It is not efficient, but it is cost effective as it is less expensive to make, and 100 watts 24/7 is a ton of power.
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