Questions:

In winter, is the ambient temperature low enough in shade to allow frozen stuff to remain that way outside or in an insulated space [is a freezer needed in winter]?

Will the place be continuously occupied in winter [is there a need for continuous freezer storage throughout winter]?

Can the occupant(s) do without frozen food during winter [can a shift in diet habits substitute for frozen foods during winter]?

Does the cost of grid power versus adding more solar breakeven over any reasonable time [is it practical to increase the solar to be viable in winter]?