Until now all hydrolysis catalysts were made out of precious metals, making relatively impractical to produce hydrogen (a top quality fuel that emits only water vapor as residue) in large quantities out of water, what implied the use of polluting methane instead, a bad "solution".
However US researchers have now developed a nickel-based catalyst that performs even better than the old expensive ones, shows promise of durability and even reduces the electric tension needed so much that even a common 1.5 V battery can do the job.
Scaled up industrial designs are under research but seem perfectly feasible, judging on the excellent results of these nickel catalysts.
Effective transformation of electric energy into hydrogen and a modicum of political will are all that are needed to make the jump from a petroleum-based energy system to one based on renewables with minimal, if any, pollution impact.
The main problem of renewable sources of energy is that their supply is somewhat unstable and their relative low portability. However being able to store all that energy in hydrogen form, split out of water, should solve these inconveniences and, politics allowing, even fully replace our current, polluting and growingly expensive, reliance on fossil fuels.