Storing hydrogen as a hydride is more than a quarter of a century old. As far as generating the hydrogen, how many consumers can install a wind generator at their residence and how many locations would provide reliable sites for solar panels? Assuming the sun was available for twelve hours, it would take four days to load a tank - two days at twenty-four hours as stated in the article. I take this to be more hype than reality. Something in the blackhole of my memory tells that this company was involved in shady practices many years ago.
So the question here is...how often do you fill up your tank? I only fill up once a week...which leaves me an overage...and that is on a ~300 mile week. If you figure the 650 mile they claim, I wouldn't have to fill up for 2 weeks. That leaves me 2.5 tanks in storage every time I fill up. End of the month I have enough for 5 more tanks...I can turn off my generator for 2.5 months.
Adding solar and or wind power to augment the line power would help reduce the increase in line power consumption you would experience running a hydrogen extraction machine. A well designed system would switch between solar/wind and line power as conditons and hydrogen needs warrant.