I may tell from Polish perspective - loosely speaking: Germany and Austria used to share single bidding zone: electricity was produced by wind at the north and then consumed by factories at the south. The problem: no sufficient grid connection - Polish and Czech grids were used instead, what caused major problems - loop flows. It lasted from 2001 to 2018.

Unification needs to be real, including grids, not on paper only.

Sweden has plenty of cheap hydropower. But as prices are now tied to countries like Germany which made catastrophic decisions around energy, Swedes have to pay much more than if Sweden had an independent energy market.

Having to pay more because of Germany going fossil fuel like crazy. When there’s no wind and it’s dark they cause most of EU to suffer since the cost of their coal plants are so high. We also send a lot of green energy out of the country only to import coal powered from Denmark (not as major, mostly happens due to high consumptions) And we’re also getting a price spike fee, don’t dare to put on the dish washer when your neighbor is!

All this in a country where electricity was almost free (to be fair, our dismantling of nuclear doesn’t help here)