Permanent Hair Removal With Home Electrolysis.Needles, Epilators, Holders.

How much energy does it take to create 1 kg of H2 using electrolysis in KW?

I was just sitting around thinking about this and wasn’t sure how much energy an electrolysis devices uses. Does anybody know roughly the amount of energy they use? It doesn’t have to be KW, if there is another unit that is more convenient please use it (Watts, etc).