Not entirely sure: everywhere I read about solar + storage, there are huge errors bars. Eg : https://www.lazard.com/media/eijnqja3/lazards-lcoeplus-june-...

Solar+storage : from 50$/MWh to... 131$/MWh !

Go make a decision with something like that.

The trend is clear, for sure, and it will make sense to extrapolate... Up to a point, as usual. (baring one of the "breakthroughs" that make it to the HN top page on e in a while and never materialize... Sigh)