Storing hydrogen at home is not going to be cheap though, is it? At that point it would be worth to look at storing eg methanol.

Use heat and pressure and electricity and you can convert CO2 and Hydrogen into Methane.

Methane when burned releases the CO2 back into the atmosphere, but if you're mining the CO2 from the atmosphere to begin with it pretty close to carbon neutral fuel.

https://news.osu.edu/turning-carbon-emissions-into-methane-f...