All these options have up sides and down sides, most people would not entertain any of them but I find it all very interesting, from straw bale construction which I was interested in 30 years ago through self generated lekky to home made diesel. And, the start of this thread (which I am sorry to have miss directed) home made stoves and a rocket stove which I might make for my workshop just because I can. Yes biogas is yet another alternative but you need either the animals, compost or other “fuel” to run it so that would depend on your lifestyle.