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The EU currently imports 82% of its oil, 57% of its gas and 97.48% of its uranium demands. There are concerns that the EU is largely dependent on other countries, primarily Russia, for its energy. This concern has grown following a series of clashes between Russia and its neighbours, threatening the flow of gas. As a result the EU is attempting to diversify its energy supply.

Sources:

http://en.wikipedia.org/wiki/European_Union#cite_note-Energy_Russia-132"Foreign Energy Dependency" is an easy qualitative factor to overcome, so the investment will not have to spend much time trying to overcome this issue.