[Qwertious]

>you suggest using green h2 as backup which not only isn't economically feasible (for now at least)

That's poor logic, h2 as a last-2%er doesn't need to be feasible until we've gotten to the 98% mark. And honestly, h2 feasibility is a function of cheap energy anyway, which probably means midday solar while solar farms are chasing dusk prices.

[Moldoteck]

not, h2 feasibility in the context of power generation depends on many more factors, including how frequent the plant is used when day hours will be mostly tapped by solar generation and how you'll do price compensation. And in the context of h2 for renewables as a peaker, it'll need to be much more than 2%. And again, the emission problem for h2 generation isn't solved yet beyond fuel cells