The largest consumer nation of Nuclear energy is the USA.

The United States of America accounts for 32.7% of global nuclear energy consumption. That is equivalent of 183.2 Million tonnes of oil.
France is the next largest consumer is 17.2% of nuclear energy consumption. That is equivalent of 96.3 Million tonnes of oil.

In total North America accounts for 36.9% global nuclear energy consumption and Europe & Eurasia account for 47.6% global nuclear energy consumption.

What is interesting to see is that how outside Europe, Russia and North America, little nuclear energy is consumed, (and thus produced).

However with oil reserves dwindling, one can assume Nuclear Energy will become a key energy factor in the global supply game of energy.