I know its huge.
I’ve read the feasibility studies for hydroelectric retrofits on two small dams in Ann Arbor. The cost of the project is around $5 million each with an estimated service life of 40 years (with a possible service life closer to 70 years) the dams would produce an estimated 500,000 to 750,000 kwh each. And they work all day every day.
Compare that to a windmill which costs as much to erect, has a service life in the range of 10 to 20 years with 30 years at the outside and only produce electricity intermittently. Then you have the approx. $5 million cost of tearing the old one down and erecting another in its place for another $5 million.
Good lord what a disaster this will be.