I have my old bills too.  Natural gas is about the same price is was 15 years ago.  Gasoline is less costly than it was when oil prices were over $100 per barrel.  How many more devices do you have to plug in or on all the time (TV for one) than you did 15 years ago?  That has more to do with the overall cost than the increase in kilowatt hours.  All the money goes to goods and services you use or rely on whether it is health care, road maintenance, police, EI so that women get paid mat leave, etc.