Permaculture is a Design Science. In Permaculture we look at how energy is captured, used and re-used in our efforts to feed, clothe, transport and educate our society. We optimise the use of natural energies, engage and empower people to meet their own needs and ensure that the waste is well used and re-used. Essentially, we search for a way to close the system.
Permaculture examines the Energy and flow – there is a significant difference between closed and open food-production systems
In a truly closed system (one in vacuum or in space) energy is not lost it is simply transferred from one being or element to another. In a permaculture system, (which can never be fully closed), energy is ideally used by one element effectively and passed on for the benefit of the next before it leaves the system.
The big difference between a permaculture site and a farm is that a farm is a very open system, the farms nutrients are shipped off to market forever and so there is constant need to regenerate the soil through good soil-building practices and importing resources. although the world desperately needs good farming practices, we also need permaculture systems where people can help produce what they need, where they live and can feed the waste back into their permaculture sites.