Would you do it to the backup for the backup generator?
Actually, this exercise has me thinking about getting an LiFePO4 battery, battery charger, and inverter setup for night time during these cold weather outages. It would run silently during the night for the little amount of power I’d need. Then I could crank the generator in the morning and charge the battery/run all the things in the house. It would put more load on the generator which may help me to get it closer to normal operating temp.
But, it is difficult trying to justify having more crap stored at the house for a thing that (maybe) only happens once every several years.