[RE-wrenches] Micro Hydro control

Hi there gang, We are looking at a 4kW PM hydro for a client and was wondering if anyone has done an automated control of flow into such a unit so as to limit the amount of water being taken from the stream in the Summer. This is usually done manually by closing down nozzles on the unit but h

[RE-wrenches] PV and home value

Can anyone point me to any documentation out there as what installing a PV system on a home does for its resale value? I mean, I would think that it would certainly add to it, but would like to see some research backing that up. Thanks, marco Marco Mangelsdorf, Ph.D., President Electrical Con