I have backup solar power, enough to recharge batteries that operate radios, lights, GPS, and miscellaneous gadgets. For cooking, I will go with propane or any of several backpack type small, handy stoves. For heating and toasting marshmallows there is a fireplace.

When it comes to portable solar, I must admit I am a Goal Zero fan. Not at all cheap, but well engineered and effective. i am beginning to think seriously about rooftop solar panels.