Recently, we published a graphic that helps you understand how much you spend on energy every year, based on where you live. Now we want to help you understand how much energy you use, not just how much you spend. How Much Do You Consume? Explaining how much someone spends on residential and transportation energy is straightforward; you see it every month in your bills. But understanding how much you use is a more complicated concept. For instance, if I told you that you used 149 million British Thermal Units (Btu) of energy last year on transportation, you would probably…