Agree. It seems to be a fairly unique problem that intermittent energy sources introduce.

Charging batteries definitely seems like part of the solution and electricity tariffs that adapt to wholesale costs on a shorter time basis help incentivise it. There are times over weekends/holidays where the wholesale price enters negative territory, essentially paying you to charge your battery.

Electrolysing hydrogen to burn is inefficient vs that kind of thing but at least acts as a battery itself, though there's costs/problems in storing it.

And the general problem of how long do you need to store energy vs what the weather forecast may be.

It seems like it's not a solved problem and it'd be exciting to move towards a point where it is. Hard to believe in the 50's they thought nuclear would solve everything and would be "too cheap to meter"