Cold climate isn't the interesting niche for the beginnings of grid scale Na batteries - hot climates are.
If you put LFP batteries packed into a cargo container next to a solar farm in California or Nevada, a significant portion of that container will be piping (to every cell) and compressors for a beefy AC system. LFP cells don't like to work hot.
This cooling system will take up a significant portion of space, power, and worst of all, of the total maintenance cost of the entire battery system.
An identical system made of Na batteries will take 2 containers, but need no cooling power and basically no maintenance - no moving parts, unlike the compressors and fans of the LFP pack.
If you put LFP batteries packed into a cargo container next to a solar farm in California or Nevada, a significant portion of that container will be piping (to every cell) and compressors for a beefy AC system. LFP cells don't like to work hot.
This cooling system will take up a significant portion of space, power, and worst of all, of the total maintenance cost of the entire battery system.
An identical system made of Na batteries will take 2 containers, but need no cooling power and basically no maintenance - no moving parts, unlike the compressors and fans of the LFP pack.