So just how do we get electricity from water? Actually, hydroelectric and coal-fired power plants produce electricity in a similar way.
In both cases a power source is used to turn a propeller-like piece called a turbine, which then turns a metal shaft in a generator, which is the motor that produces electricity.
A coal-fired power plant uses steam to turn the turbine blades; whereas a hydroelectric plant uses falling water to turn the turbine. The results are the same.