The way to look at these is to not focus on any singular technology. Getting to the point where we have EVs that can go >300 miles on a charge was the combination of lots of breakthroughs over the previous 30 years. Some of what you hear are dead ends, but you only need a few to work out to push things to where they need.
Broadly speaking, grid storage is a somewhat easier problem to solve than EVs. They care less about mass, and more about cost per MWh.
The way to look at these is to not focus on any singular technology. Getting to the point where we have EVs that can go >300 miles on a charge was the combination of lots of breakthroughs over the previous 30 years. Some of what you hear are dead ends, but you only need a few to work out to push things to where they need.
Broadly speaking, grid storage is a somewhat easier problem to solve than EVs. They care less about mass, and more about cost per MWh.