Actually water turbines (aka hydrogenerators) are also an option, but it's less common. http://cdn.streamlike.com/secure/Covers/68/17853.jpg http://cdn.streaml

Actually water turbines (aka hydrogenerators) are also an option, but it's less common. http://cdn.streamlike.com/secure/Covers/68/17853.jpg http://cdn.streamlike.com/secure/Covers/68/17853.jpg