We have none whatsoever. Geologically, Finland rests on the Baltic shield which consists of very old rock, and it's top has been scoured clean of any newer rock

We have none whatsoever. Geologically, Finland rests on the Baltic shield which consists of very old rock, and it's top has been scoured clean of any newer rock by successive ice ages. If you dig down 50cm from the surface soil on which I'm standing right now, you get to granite baserock that is almost two billion years old. Rock this old does not have any fossil fuel deposits, since the first such deposits were formed some ~360M years ago. The closest thing Finland has to fossil fuels are peat bogs. And those are currently rated "slowly renewable" by both the Finnish state and the EU. This is half true -- they do replenish, but only at a rate of millimeters per year. Typically, it would take some 4000 years for a harvested peat bog to return to it's original thickness.