I realized we don't pay for water pressure when paying water utility bills, but only for the water itself. Can someone do the math and explain how much electricity can be generated with a hydroelectric generator to convert the high pressure water from the utility company coming into a home to low pressure that is still strong enough to have water flow normally in the house?Are there times of day that water pressure is even higher and more electricity can be extracted?Is the cost of extra water consumed for electricity production offset by the amount of electricity generated?