Comment by scythe
4 days ago
The good thing about northern regions is that they tend to be wet and have low population density. This is pretty good for pumped hydro even if batteries aren't cheap enough at a particular time. But it's not clear when the manufacturing costs of batteries will hit a minimum. So far they continue to decrease.
Maximum elevation in Finland is is 1 324 m and that is in extreme north with less water. In general there just isn't elevation differences that are useful enough.