Isn’t that the idea behind offgrid living? I mean people do it, so obviously it can. Energy can be harvested by solar panels for electricity, or converted in a diesel generator from oil/petroleum which you’d need to buy. And you can chop down wood and burn it to heat the place or cook something… The smarty-pants answer is - energy isn’t “created”, you convert it. So I think the answer is more where do you get the energy source. As with wood, that might be available around a cabin in the woods. Solar and wind might be avalable almost everywhere, and you can buy devices to convert it and batteries to store it. Other things like oil probably need to be bought.