When most people think of energy efficiency, they think of turning off the lights when they leave a room or only running the washing machine when it's full. However, as my Environmental Science teacher (Professor Alain Plante) pointed out today, energy efficiency is really referring to the efficiency in creating energy at the source. The process used to generate electricity from fossil fuels, for example, is only 30-40% efficient, nuclear 30-35%, solar 5-30%.
That's not to say that every drop in the bucket doesn't count, but it follows along with the same principle that countries need to develop sustainable policy and companies need to use sustainable practices. Energy producers, countries, and companies really need to get on board in order for us to get going on the climate change issue.