Take a look at heating if you want to see staggering energy consumption numbers. In a majority of places, people don't use heat pumps with a COP of say 4-5, but

Take a look at heating if you want to see staggering energy consumption numbers. In a majority of places, people don't use heat pumps with a COP of say 4-5, but convert chemical energy with a cop of 0.5-0.9.