I’ve heard about fuel cells that run on the energy release when hydrogen and oxygen bind in to water. And where you still need energy up front to split the water into these two components.
But Eduard Povel pointed me to ”'[http://www.byronnewenergy.com/ Byron New Energy]”’, also using water, but ‘cosmic charged water’, delivering [http://en.wikipedia.org/wiki/Perpetual_motion perpetual motion] that may well solve our hunger for energy.
Interesting. Will dive into it.