The system that I use for my shelter option:

The generator will be run 2 times per day (for 2-3 hrs) to run the refrigerator & freezer after I break food out for the next 12 hr period. I'll also recharge my batteries during that same time.

I use a 300 watt invertor to supply battery power for the T.V, computor, cable box, & lighting during the majority of the time. No, I don't run them all at the same time 24/7. If EMP hasn't already destroyed the electronics, the plan is to make periodic checks for news, Civil Defense announcements, and weather reports; and run some lighting.

I also have a bicycle powered magneto that will put out 110VDC to recharge batteries.

I am playing with an anemometer to trickle charge the batteries. It will probably only be practical for recharging the small dry cell batteries.

My biggest problem at the moment is to keep my shelter cool in the summer months.