Feel free to pick this apart (although I prefer that Sue not continue to refer to my anatomy or sexual habits)
Basically, there is a big sealed system (to prevent evaporation). There is a huge tub of water in the bottom then a big tube with a vacuum on the left hand that draws the water up and over. It then flows down on the right through a waterwheel which generates power and then the water flows back into the tub.
The vacuum doesn't require power as it is constantly filled with water. The water wheel is driven by the gravity accelerated water.
Therefore, this closed system should continuously generate power.