Not just any coal either. They opted for brown coal, the least efficient and most dirty kind.
Certain countries in the EU view that nuclear energy is not "green", not the whole EU. The European Commission will make a call very soon for the upcoming funding period and frankly it looks like they will support nuclear energy.
That's not the view of the EU, many countries in it are heavily pro-nuclear and fighting to have it marked as "green".
Surely that must be a politically motivated stance.