https://www.solarreviews.com/blog/best-solar-generators
Start with this.
Agreed. I have been doing this for some time. I rebuilt my 1880 house in the mountains with this type of energy before I connected to the grid. I generally buy cheap components on ebay or locally, but these are some nice products; I like the Yeti.
Some other advice from the north country:
1. One of the first readiness conveniences with power off and heat out is a fully working electric blanket. Standard ones are less than 200 watts. Buy the inverter for twice that wattage and enough battery capacity. One deep cycle battery goes a long way. Electric blanket requires the 'Pure Sine Wave' inverter to work. I make a long winter drive often (skiing in the mountains this week). A powered electric blanket is a key winter travel accessory for me.
2. Buy and wrap heat tape on critical pipes n your home such as your water meter and plumbing pipes and fixtures. I've had furnaces go off when not home and in vacant homes. The heat tape comes on when the pipe temp hits 38 degrees, so it costs you nothing in electricity to be plugged in and ready. These would be good to hook up to backup power in that they use very low wattage. In an emergency, heat the people and then the plumbing pipes first. One point about freezing up your water meter, which I've done twice, a prepper might not be eager to invite the city into your home, and the City generally owns the water utility.
3. Natural gas and propane generators. If you have piped natural gas to your home (or propane), there is no reason your furnace should be off when the electricity goes off, but it does go off. Typical furnace fan needs about 800 watts. I haven't done this but I should. They make one called tri-fuel. If you have gas, you shouldn't be without electricity, even if it is just to recharge your batteries.
4. Buy gas or propane heaters for backup that don't require electricity. My tankless gas water heater lights with two D batteries that last a year. In an electrical outage, I still have endless hot water. Wall heaters can be bought for gas heat with no electricity required. Same for gas fireplace inserts.
5. In one off grid setting we use a propane powered refrigerator/freezer. One more thing that doesn't have to run off the generator and can run when the generator is off.
6. Buy a CO detector if you are using gas combustion of any kind. Buy the one with the digital display so that if you ever do get a reading, you know what the CO level is. I carry one in the car for winter emergencies, in case I've pulled over and need to leave the car/heat running.