The Biosphere Eco-City (BEC) model divides sustainability into broad areas of interest. These Ten Themes provide a clear focus for discussion and action. Because they are concrete, they are also easy to understand. Discussion groups, based on Themes, can bring together people who share common interests. It furthers cooperation.
Heating/cooling, transportation, manufacturing, and agriculture are all major energy consumers, and are therefore potential areas for conservation. Projects could focus on such things as: energy sources, energy storage, natural sheltering, alternative energy vehicles, etc. A Biosphere Eco-City might also promote manufacturing processes that save energy or provide energy for other uses (e.g. district heating systems). In rural areas, agricultural projects might focus on conservation (e.g. low energy cropping systems) or supply (e.g. generation of bio-gas).