A Water-Energy Nexus analysis to a sustainable transition path for Sao Paulo State, Brazil

Bortoleto, Ana Paula; Franco Barbosa, Paulo Sergio; Maniero, Milena Guedes; Guimarães, José Roberto; Vieira Junior, Luiz Carlos Marcos

A Water-Energy Nexus analysis to a sustainable transition path for Sao Paulo State, Brazil

2021

Bortoleto, Ana Paula | Franco Barbosa, Paulo Sergio | Maniero, Milena Guedes | Guimarães, José Roberto | Vieira Junior, Luiz Carlos Marcos

An emergent strategy to target sustainability involves an understanding of the water-energy interconnections. It takes water to produce energy, and it takes energy to source, treat, and distribute water. Sanitation and energy distribution are the world's pre-eminent development challenges. They are a magnifier of poverty, ill-health and mortality, and gender inequality. The word ‘nexus’ means the understanding of these interdependencies, tensions, and trade-offs. This paper investigates water-energy interconnections through critical analysis. We applied a bottom-up approach to describe Sao Paulo state's river basins, in Southeast Brazil, from the household to the regional scale. Initially, water availability, energy consumption and wastewater treatment data are inferred using per capita data. The subsequent data analysis then considered the positive and negative linkages among the basins. Local and state levels of dependency are also assessed, considering environmental and socioeconomic impacts. The significance of this paper lies in understanding these interconnections and their interdependence within the local context and individuals' behaviour. The results allow a comprehensive analysis of the water-energy Nexus across Sao Paulo state. The critical analysis also shows how the primary drivers contribute to urbanisation levels, population growth, and industrial activities.

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