Which unless you have solar, you are paying for. Even if you have solar, you are paying off the panels, batteries and inverter/chargers over a period of time.
I know, I have one of those weird H shaped flasks with the plat electrodes.
I also have a gas bbq, yet couldn't fill up a LNG car at my house. Maybe there's something more to it than just making small amounts of room temperature / pressure H2.
