From the Second World War maps, I recall Ukraine's northern border being roughly the same latitude as the south side of Germany. There is less cloud cover in the north area of the country, so it may work. After the California desert experience with solar to thermal conversion, we now know one way to not do it. Photocells work even if the sun is hiding behind clouds, just not as well. Ukraine needs the energy, so it won't need to be shipped as far. I saw a Life After Humans episode that had Chernobyl coverage. The local critters ranging from voles to deer appeared to be in good shape and the abandoned buildings were being overtaken by plants. This does not mean it is safe. The Eniwetok experience showed low surface radiation but the coconuts had enough cesium in them to be quite dangerous.