I am far from an expert but I did stay at a holiday inn express one time so I have that going for me. My neighbor just installed solar panels on their house last year and the jury is still out. It all depends on your location because of the sun angles throughout the year. The further north you are the less effective, or efficient, the solar panels will be. Not as much sun in the winter and snow will cover them. I have a portable Generac I can plug in my house. It will run the whole house without issue. If I did it again I would go with one of their permanent installed LP or gas generators. They kick on as soon as the power is out. Generac claims on their website the solar/electric generators can last up to 3 days. I would browse around their website and see what they have to offer. It all comes down to your application and needs.