"Let market sort itself" only works if government thinks about it in advance, have fair elections, low corruption, etc.
Cost of natural gas / coal / oil is going up significantly and is a huge problem for all of Europe (not just Eastern) at the moment. A lot of Eastern Europe will have rolling blackouts and need to buy power from Russia / Belarus. Kazakhstan is in the same boat in that regard. I would venture that they are probably still on the USSR power grid as well and can buy easily from Russia / Belarus.