I still prefer portable for our camping situations, but to each his own on that.
For the OP, I am wondering how your can get any solar at all when you get those power outages. Here, those usually happen in storms when trees fall on the lines. No sun in the sky in that kind of weather. By the time the sky is sunny again a few days later they have the power back on anyway.
You can't get enough in from solar to do anything when the sky is overcast. It is not enough that it is light out in the daytime so you can see. If that is what you expect then save the solar money to buy more gasoline for the gen.