The cold places are usually extreme latitudes. I live around 60 latitude and here during the winter it might not be even that cold (tho it can be -20 or -30C).

The cold places are usually extreme latitudes. I live around 60 latitude and here during the winter it might not be even that cold (tho it can be -20 or -30C). It’s that the amount of sunshine hours and the angle it shines at means that for about 3 months the PV production is essentially zero. This is during the time the demand is highest.