Doug Bullock occasionally mentions someone who lived along a stream and had a pipe of water routed through the house. You could apparently open a cabinet and pull a lever to move a pelton wheel into the flow. When you were done using electricity you just flipped the lever back and the pelton wheel would stop spinning.
paul wheaton wrote:If one had a micro hydro situation where a large pond could be built at the water source, I wonder if one could get away with fewer batteries because you could just increase/decrease your flow on an as needed basis.
So if your batteries are full and your current electricity needs are low, could you just run less water through your generator? Then, when needs were higher, you could run more water through your generator?