The worst storm I was through and remember was the Ice storm in the north america east coast in 1998.
I remember my house not having power for 1 week at well below freezing temps. I also remember by day 4 I was running out of firewood, and I ended up using a 12V to 120V 1200 watt power inverter on my car... running my car on the driveway. Power inventor on the +ve and negative of the Subaru... hacked open an extension cord... cut open the 120V AC cabling going to my gas furnace. Splicing it into a spare junction box with twist on electrical Marrets to supply power to the furnace to warm the house up.
I also remember using my propane BBQ to make breakfast, lunch, dinner.