It's one thing doing that as a simple experiment in your kitchen or backyard, but to do it on an industrial scale, you need purpose-built electrolysers.
So I'm standing here on the floor of the ITM Power electrolyser factory and electrolysers, of course, are really critical piece of equipment for making green hydrogen.
" We would need at least four people full-time to figure this out, " explains Vaitea Cowan, co-founder of Enapter, a maker of electrolysers, machines that produce hydrogen.