Yeah, that's exactly when all the semiconductor industry left Germany! And why France - the only country that's close to fully nuclear - is the industrial power house of the world. Stay shallow, HN.
It does well for itself and Europe but there are several US states that have a larger GDP and industrial output than France does.
Cheap energy is a necessary, but not sufficient condition for "economic miracle". France has relatively cheap energy, but it has other problems. It would be worse off without nuclear, though.