Re Poland locally mined - i dont know wtf went wrong but we went from having huge reserves to buying from India within a year... A lot of homes rely on coal to be available by the time the winter comes and apparently they are left with nothing. People stand in line for a few days (literally, husband/wife/kid rotation in the queue) just to get the ticket for the coal. The ticket guarantees you to get the coal once the previous orders are filled. My friends waited in such queue a few weeks ago. Eta for coal delivery for a private household if you went through all this hussle: April.

Baltics are mostly self-sufficient. But the problem is that baltic countries are still syncronized to the russian grid. Russians could disconnect us any time and make our power grid unstable until we sync up with rest of the Europe.

https://news.err.ee/1608726511/estonia-grid-connected-to-eur...