Lots of setups available for various costs.
What is your intention of use? Powering house? Off grid, camping, tailgating?
Of course back up power but what's the primary plan? Goes to how much power the battery has and then how much the solar power panels may produce.
Granted we are in Washington so it's limited at best for solar and solar panels even rated are only good for about 40-65% of it's rated power producing (in reality).
Put some parameters on what your are looking for. Cost being the most significant/important. Size or portability may be one of your reasons too.
I budgeted $2500.
Purchased the Jackery 1000W with 2 100W solar panels. I paid just over $1100 on sale. It's listed at $1500 now.
https://www.jackery.com/collections/fea ... -generatorIt's an all in one unit. Simple function and proven over time. Lots of reviews by active off grid users meaning they use it a lot.
I also picked up a gas powered generator 5500W as a back up.
Mine is for camping and travel use and of course emergency back up power, if needed.
*Reminds me I have to go test out the gas powered generator for it's monthly test/function.