I bought a dual fuel gas+propane 12,000 watt peak generator a couple years ago. Then went out and bought a bunch of 40lb propane canisters and got them filled up. Secret about propane is that, unlike gasoline, it can be stored practically forever. If I have access to gasoline, I'll get some of that and use it up first, while the propane is being saved for SHTF scenarios where we can't get gas. Every few months when I have a bit of money, I get another canister. 100lb cannister are just too darn big/heavy, and would be difficult if not impossible to move up and down stairs ... although using 100lbs. would take up less floor space. I was looking at getting a 500lb. tank for right outside the house, but I also need smaller ones to be able to move around inside.
I have a small propane stove, indoor vent-free propane heater, and a propane-powered (no-electricity-required) hot water system.
I've looked at solar, but darn if you wouldn't need to spend 10s of thousands of dollars on enough solar panels to keep your appliances running. I thought that I would get one for the sump pump in particular, since I don't want my lower-level flooding if we lost electricity and water (I have a water-pressure backup). But I ran the numbers, and this would require a huge amount of solar storage.
I'm trying to figure out if there isn't a way to get some manual pump installed there that in an emergency with no electricity and no water I couldn't manually pump the water out of there to keep the lower level from flooding. I also wonder if there's a way to alter the foundation to allow the stuff just to run off, since there is a bit of a grade in my backyard. My previous house didn't require a sump because the water was just channeled downhill from the house.
I have a gas fireplace that I'd like to convert to wood, but it would probably require that the flu be swapped out.
Now, back to the main subject, they have these 12V refrigerators out there that require a lot less power (since power is lost in the inverter) and that might be an option. But I think the question is what your intended scenario is. If you're just planing to get by a few days of power outage, I would just gave a large deep cycle battery and an inverter, and then charge it from the home's electrical current. Longer term, you'd have to calculate the number of solar panels you'd need to sustain it for the duration. I suspect, however, that in a SHTF scenario, it might be difficult to acquire foodstuffs that require refrigeration and that one might be living out of cans and stored dried goods.
Here's just one 12V refrigerator that I found ...
https://www.recpro.com/rv-refrigerator-10-7-cubic-feet-12v-stainless-steel/