Uploaded on 2017-02-24 by Olmo Losada

I live in medium size coastal town in the east of Spain, placed near to a mountainous territory with high solar incidence, almost all year round. In the surroundings of the city there are many agricultural fields. However, the food is one of the most important flows, because most of the produced food in the territory is exported to different areas and other foodstuffs are imported. Another example of flow is electricity. The electrical needs of the city are supplied from different sources, as hydroelectricity plants, nuclear power plant or wind energy. The electrical consumption, specially during the summer, is high due to the air conditioner demand. On the other hand, the water supplied is another important flow because of the high demand for the crops and human consumption, specially in summer, when the city population is doubled. This water comes mostly from a desalination plant and some valleys around the city area. All of this flows might suffer important changes in a few years because of the new technologies and the change of consumption habits. Crops around the city would produce almost all the necessary food for the citizens, if the foodstuffs didn't go to other places and the citizens began to consume local products. This would reduce the environmental impact of the foodstuff transportation while promoting the local economy. Energy flow and specially electrical energy, could change completely if renewable energy systems were implemented in the city and the territory. The high solar incidence and strong winds might generate almost all the energy needed in the whole territory. Finally, the water flow might also change if the buildings began collecting and storing the rain water. This could significantly reduce the water supplied and also the energy needs for its transportation and processing.