There's an outfit (
ABS Alaska) that specializes in off-grid and back-up power systems. They're very experienced in Alaskan (harsh) conditions, widely varying amounts of seasonal sunlight, and remote (roadless) areas.
I go to them when I have questions, need someone to look over my (sometimes screwball) schemes, and get quality parts. (I always have them make my battery cables because they use arctic grade components.)
They have a lot of info on their site and you might want to ask them about consultation fees.
BTW - Most remote, off-grid systems up here use a generator, large battery bank, solar panels, and inverters. We also use propane refrigerators and stoves to minimize electrical requirements.
