A New Era in Small-Scale Hydropower

With a small-scale hydropower system, even a relatively small stream can offer a lifetime's escape from electric utility bills.

143 home owner hydro - table, feet of head
The chart gives you a good idea of how much output in watts you may expect per different gpm (gallons per minute), for varing feet of head. Multiply the number of watts by 24-watt-hours to get the total number of watt-hours generated in one day. Divide this by system voltage to get your amp-hour per day output.
MOTHER EARTH NEWS STAFF