So how do we get electricity from water? Really, hydroelectric and coal-fired energy flowers produce electricity in a way that is similar. A power source is used to turn a propeller-like piece called a turbine, which then turns a metal shaft in an electric generator, which is the motor that produces electricity in both cases. a power that is coal-fired utilizes vapor to make the turbine blades; whereas a hydroelectric plant utilizes dropping water to show the turbine. The outcome are exactly the same.
Have a look at this diagram (due to the Tennessee Valley Authority) of the power that is hydroelectric to start to see the details: