Comment by Maxion

Yep, I live in Finland where we are quite far ahead of the curve when it comes to renewables and nuclear. This is one large problem. When it's winter and cold and dark, solar does not help. Wind only helps when its windy.

Batteries are coming, and will solve it, but it will still take time for them to be come cheap enough.

Only once we have ~7 days of storage (~100 GWh of storage) will we be able to get rid of the last fossil plants.