The World's Most Energy Efficient Countries

The world's most energy efficient country is Japan. It's total energy consumption is equal to 22.6 quadrillion BTUs. The main idea behind BTUs is that if a country has a high GDP and uses a relatively small amount of energy, it is most likely a very energy efficient country. Also, if it was just the opposite with a low GDP and a very high energy usage, it is very likely to be inefficient.