If you wanna live off grid do it in a tropical region so you won't need energy for heating. When I was in Thailand I slept on the beach for 8 weeks, why have 5 star accommodation when you can have 50. I loved sleeping on the sand seeing the stars, listening to the ocean. I was planning on making a sand bed it was so comfortable.
Food was easy in a tropical region. Bananas, melons, durians. The streets in the city were covered in taramind that had fallen from the trees. I remember using a big stick to gather a bunch of wild bananas and they were so sweet and tasty.
I'd wash in streams/waterfalls, it was refreshing thanks to the heat.
Living off the grid with no money in a cold climate is just masochist. We are tropical creatures not born for the cold. We don't know any better because we've been brought up in houses with heating and supermarkets. We work hard every at jobs we hate to buy holidays to get away from it all. Eventually some lost souls get fed up with our daily social reality that we've been born into and make threads about living in the wilderness.