water power can be really bad for the environment..
there is great progress in nuclear fusion power, like 1 or 2 weeks ago they final got a little more energy out of a fusion system then they putted in.
this source is 99.99999% safe, and if it goes wrong there might be an explosion, but no radioactive substance melting down the earth and al the other stuff..
and it is 100% clean
and while the full is H2 it is easy to get that from water, so we have almost endless fuel.
actually changing the atoms.. which changes the atom balance of the world.. it might be a problem in a few billion years.
when we can actually run out of water.. strange idea.
so i think when technology is ready we should only use fusion power