Autarky can be defined as the quality of being self-sufficient, thus energy-autarkic habitats are human dwellings which are independent concerning energy consumption for living. This may be based on resource efficiency, choice of building materials, living space, and so forth. Autonomic habitats are similar but reflect that fact that the person desires to act morally solely for the sake of doing "good", independently of other incentives. Subsistence agriculture can be considered a form of autarkic living. With the advent of industrialization networks for energy were set up, which led to dependency, but made life easier in many respects. Autarkic living can be seen as a trend "back to the roots" - being independent of coal, gas and oil, and using renewable energy (wind, sun, water, wood).