It still requires wind and/or daylight. You may be aware that large swaths of Finland, Norway and Sweden sees the sun set and not rise again for weeks or month

It still requires wind and/or daylight. You may be aware that large swaths of Finland, Norway and Sweden sees the sun set and not rise again for weeks or months. And during this period it’s also not uncommon to see -20 C or colder. Even worse/ the colder it is, it’s also typical with very little wind inside large stationary high pressures. Then it’s months when the sun barely sets, as well as windy periods in spring and fall. Using wind/sun only requires storage not just between night and day but between seasons. Luckily in these particular regions there is plenty of hydro so aren’t reliant on wind and sun only to be 100% renewable.