the metallic salt or whatever isn`t cheap as they claim, it`s a simple matter of energy balance we all learnt in chemistry (or I hope we did), to liberate the hydrogen takes x amount of energy, to balance the equation, recovering the used "cheap" additive from the water after use so that you can go again needs x+y amount of energy, the amount of energy you get out needs more energy than it gives to create it, and you
have to create this additive unless you happen to know where vast deposits of a metalic salt that turns water to hydrogen are lay about (this is naturaly gonna be a part of the world where it
never rains
)
claims that this is cheap or free energy are up there alongside perpetual motion machines and antigravity, and the claim that nobody could afford to build a powerplant are unfounded, if the major producers could reduce their fuel bill by just 5% they would be installing gas burners jetted for hydrogen at every boiler in every powerplant they had, remember that powerplants already use huge amounts of water for cooling, a bit of that waste water to fuel the boilers isn`t gonna cost them anything compared to the billions pa in oil/coal/gas/plutonium they currently use, their profits would soar off the top of the stock market.
why do they say Aliens are gonna be friendly?, surely the agressive ones wipe out the peaceloving ones, so all you have left out there are crazed flesh eating interstellar monsters.