From a ham of 69 years and SWLing before that; mostly here is over-kill and most brag of natural gas backup. What ya gonna do when the natural gas doesn't work for various reasons beyond your reach?
My backup was a Coleman cooler under the desk with a deep cycle battery in it and a good 120 volt charger plus 180 watts of solar panels keeping battery topped and desulfated via a good charge controller. Never failed me in that time and many weather or power system related outages. You guys are so much into overkill! Spend more time on the air.
I have a 13k Briggs & stratton generator with a 100 gallon propane tank to fully power my house, not a problem to call for more as needed
It ran for 3 days straight last august during a storm & used just under a gallon a hour & that's with the AC running 24/7 & using my washer, dryer Stove, Frig, well & Grinder pump as needed, Pretty thrifty or What??
I spend about $300 yr to maintain it/Top it off the gas ounce a year before winter
Its not overkill @ all
Its a long term investment in my house & when I sell it, It will add value to it
In closing
I laughed when i read the post about going to a bar with a generator, It brought back memories
I used to have a small 6500 portable generator to run the bare basics when power went out
I would go to that bar to get some hot food, cold adult beverages & listen to the locals talk about which gas stations were open Etc
PRICELESS