3000 watt permanent magnet generator, 400 watt permanent magnet generator, 500 watt Pelton wheel. There is also a collection of custom built housing units ,one is a 3 nozzle unit and the other is a 4 nozzle unit, there is also 3 different sized Pelton and turgo wheels. The 400 watt unit with the pvc pipe attached to it works on a siphon principle the water is pulled through a venturi past a 4 in prop