Really? Then you may want to get on the horn to one of the major power companies around here because they now have three of them and a buddy of mine makes a nice living building them.
Give us a number, we'll call them, and then they'll call you back laughing their tails off at your claims...
Then it has to work a lot differently than what you describe because that system would lose energy, not create it. Einstein has to be turning over in his grave hearing about this.
There must be a huge step in this process that you left out, otherwise there's no way it could produce power.
How in the world could you think that the water running downhill would generate more energy than it takes to pump it back to the top?
If that worked, a person could set up a hill, pump water, run a generator and get energy for free. There's no free lunch in science.