No. You do not NEED a generator. Living without hookups is much easier WITH a generator. Asking how far the batteries will take you is like asking how long a 6 pack of beer will last. Some people can make it last 6 days, others 6 weeks, but some can't last one day! My 2 12 volt batteries, with careful monitoring and minimum usage will last 3 to 4 days. Solar panels will not do just as well as a generator unless you have a serious setup. Typically, when not on hookups, I like to run my generator about an hour in the morning. During this time I try to get my coffee made, and any microwave usage I need for the day as well as letting it charge my batteries. I will usually run it an hour in the evening around supper time, again for some microwave use, maybe the news on television, and topping off the batteries for the night. There is nothing worse than having your propane alarm go off at 3:00 AM because your batteries have gotten too low!