That’s pretty cool about Belgium. Bulgaria and Serbia seem to have the cheapest electricity. Bulgaria has the added advantage of having the second fastest internet speed in Europe (Romania is the fastest). Serbia isn’t part of the EU, and so is cheaper with general costs - I know big miners in Serbia (I buy a lot of my bitcoin from Serbia). When it comes to mining, Eastern Europe seems to be ruling supreme. From what I know, Netherlands is one of the more expensive parts of Europe in terms of electricity costs, similarly along with Germany and the general Northern part of Europe.