At least where I live you can't turn heating off. Pipes freeze. Appliances get damaged. We keep it about 62F during the day in the winter whether we are home or not.

We only get groceries twice a month. I only drive a 2-3k miles a year which is far below average in the U.S. and I owe it all to the lack of commute. Most of those miles are due to the fact that we own a cabin in another state which we visit in the summer as well and has nothing to do with the day to day.