CATL's sodium ion batteries are slated to soon (1-2 years, mostly just mundane factory construction and logistics) to hit $40/kwhr. No nickel / cobalt / etc.
I think LFP is basically already under that as well (I think they are in the 60-70/kwhr range).
For grid storage, that is probably the only metric that matters: cost per kwhr of storage (and sufficient cycle endurance).
I think LFP is basically already under that as well (I think they are in the 60-70/kwhr range).
For grid storage, that is probably the only metric that matters: cost per kwhr of storage (and sufficient cycle endurance).