Independence of energy supply becomes increasingly important. In a world with political conflicts and tension, it would be nice if you could control most of, or at least a great part of your energy sources.
Most areas depend on external supply of energy and have to buy it externally and or fulfil certain conditions. Most of the time the cheapest energy wins, which normally are fossil based oil products.
The energy exists in the form of local waste. By managing this waste and turning it into bioenergy that can be stored, you become more independent from external suppliers of energy. In addition you will improve the environment both locally and globally, and provide fertilizers.