On: Heat pumps are defying Maine’s winters and oil industry pushback

[pfdietz]

Hydrogen for backup storage for the grid would be stored underground. This is a demonstrated working technology.

[AstralStorm → pfdietz]

Underground in what? Leaky container or an even more leaky cave?

There is a reason why there are low levels of hydrogen even in oil fields, while there are high levels of methane...

[pfdietz → AstralStorm]

Underground in geological formations. For example, in cavities solution-mined out of salt.

This is a known and proven technology. Despite your pearl clutching, the hydrogen doesn't escape at a rate that would make it unworkable.