If you’re trying to power appliances for any extended amount of time, I’m afraid a Jackery won’t do you much good. Not even the biggest one they sell. For the same cost, you can get a much more powerful gas generator, add a natural gas converter, and basically run your whole house off of it. I live in New Orleans where hurricane prep is a way of life, and I can’t imagine anyone planning to ride out a storm and power outage with a solar generator.
As far as smaller energy needs are concerned, I use my Jackery 500s on a regular basis to power computers, PA system, hotspots, etc. Smalll stuff. I love them and will never go back. You can find those for $350 and they are more than enough to handle that need for many hours.