Tesla cars are popular in northern European countries and I imagine these will work along the same lines: active heating of the battery. In the cars the capacit

Tesla cars are popular in northern European countries and I imagine these will work along the same lines: active heating of the battery. In the cars the capacity sacrifice is minimal and I imagine stationary batteries will be even better as (like you say) you can wrap them in a ton of insulation without having to worry too much about bulk and weight.