Some of my electricity comes from magic rocks. Hold them close together and they get hot enough to make steam. Take them apart and they cool off. Just don't hold them too close together or bad things happen.
Hydroelectric primer is actually solar energy. Sun evaporated water.. Which then rains too full the damn, then gravity does is job.. But it all starts with solar.. Freaking epic. And they called the Aztecs crazy for venerating the sun. Better than am imaginary friend I'll tell you what.
You can excite water to the extent that it starts changing it's state of matter by employing a method of electricity generation which makes use of the subject we are trying to excite and subsequently powering a device which does the aforementioned excitement of water!
You can also make light out of light by powering a lightbulb with solar energy, or create wind out of wind by powering a fan with electricity generated by wind turbines.
Just don't try to recreate nuclear energy at home, kids.