[mantas]

The problem is you can't plan for „this is rare“. Given how grid is getting more and more away from guaranteed sources, a once-in-few-years perfect storm may become a big event where shutting down hydrogen plants may be not enough to save the grid.

The other issue is, how much grid upgrades do you need to allow to keep it up from electric cars? Maybe even on green front it'd be better to have stable power generation with simplified grid. All those beefy substations don't come out of thin air.