One of my current favorites (pun intended) is the use of little Micro generators powered by water and gravity; the turbine spins around hoving just above the bottom of a water vortex created by a circle… – with more than enough room for fishies to go under and around it safely. I forget what it’s called but it’s the kind of thing you could build in a weekend with some concrete… and a giant turbine hooked up to a generator… Maybe eough to power a house. Cool stuff.
[responsivevoice_button voice="US English Male"]