> Finland is also unusually blessed with tons and tons of hydropower potential which functions both as a battery as well as power generation.

Where did you get that idea from? This isn't Norway; we don't have any mountains. The country is mostly flat and most of the suitable locations already have a hydropower plant since the 1970s.

Everywhere gets zero sun at night.

And at high latitudes, the night can be very long. And even when the sun does appear for a bit, it doesn't provide a lot of energy.

And you might want to ask the Fins how they feel about nuclear power: around two thirds of the population are for it as well as pretty much the entire political establishment, including the Green Party.

Last year, we had (depending on location) 0 to 25 hours of sunlight total in the entire month of December.

Low sun angle plus very heavy cloud cover means that even midday looks like a gloomy sunset.