What he was doing was fractioning the water and hydrogen. Don't know for sure but I think he was combining electrolysis with electrically exciting the molecules to their critical frequency; this to me in theory might amplify the fractioning process.

Another way to harvest hydrogen is using an electric arc to fraction the molecules. This is usually done with a generator so the process is not free by any means.

Unless of course you maybe used wind or ocean currents or waves as the energy source for your generator. Hmm ...

Kitz