The problem, in this case, is that the EU lives in it's own little bubble where it assumes that the member countries and commercial interests act rationally and

The problem, in this case, is that the EU lives in it's own little bubble where it assumes that the member countries and commercial interests act rationally and in the best interest of Europeans. As such I don't see an issue with an integrated electricity marked, if you at the same time ensure that countries and companies doesn't simply stop investing in energy infrastructure because: We can just buy what we need from someone else. It's fine to buy cheap wind power and shutdown a power plant if the wind is blowing, but if you only building wind farm and assuming that you can piggy back on the nuclear reactor or dams next door when the wind stops blowing, then it quickly falls appart. Each country, or region, needs to have a plan for self-sufficiency, in all circumstances, but that's not a financially sound idea. Better to have a electricity shortage once in a while, if you only care about money. This is the bit that the EU does not understand. For some reason the EU has always had a blind spot when it comes to the actions companies, and countries, will take in the name of financial gains.