I was able to lower my winter utility bills by putting off turning on my natural gas heater. I used a space heater that I carried around to the room that I was in. Though there was an increase in my electric bill, it was less than the combination of the increase in the gas AND increase in the electric bill.
I eventually had to turn on the heater when uncommonly cold weather hit, but I still kept the bill down by using my electric heater.
CAUTION - if you have an electric heater that does not turn off automatically if it gets hot or tips…DO NOT LEAVE IT UNATTENDED. I would also recommend turning it of when you go to sleep. Get an extra blanket and get up a little early to turn it on and warm up your room.