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Impacts of the hydrological potential change on the energy matrix of the Brazilian State of Minas Gerais: A case study

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  • Melo, Leonardo B.
  • Estanislau, Fidéllis B.G.L.e
  • Costa, Antonella L.
  • Fortini, Ângela

Abstract

The vulnerability of electric potential generation from water resources has been evidenced due to uncertainties of climatic origin and energy planning. Changes in rainfall regimes are multifactorial phenomena difficult to model. Rainfall is the main natural way of restoring the reservoir levels of hydroelectric power plants. The reduction in rainfall levels may increase in the coming years, resulting in a probable change of the energy matrix configuration of the state of Minas Gerais (MG). This could reduce the share of renewable sources increasing dependence on the importance of energy from fossil fuels, which are the immediate primary sources of energy available. Prior examinations have portrayed the depletion of hydroelectricity in Brazil, or its macro-regions, however this work tries to supply a more focused look at the effects on the electricity and social sectors of the state of Minas Gerais. The study developed in this paper aims to investigate the hydrological potential alteration impacts and consequences on the energy matrix of the state, the greenhouse gas emissions and the social reflexes of these changes due to scenarios motivated by climate change. The investigation intends to show the importance of the water-energy-emissions nexus for energy planning and decision-making, in order to evaluate the best options for dealing with adverse and potentially destabilizing conditions. The results of the analyses show that while hydropower demand was 5.24 Mtoe in 2015, in 2030 the supply of hydropower will be 5.81 Mtoe and 4.72 Mtoe, for the conservative and severe scenarios, respectively. In addition, the effect of climate change may require an increase in the share of non-renewable sources in the energy matrix, which could increase CO2e emissions from 4.2% to 7.4% by 2030, compared to the levels in 2016.

Suggested Citation

  • Melo, Leonardo B. & Estanislau, Fidéllis B.G.L.e & Costa, Antonella L. & Fortini, Ângela, 2019. "Impacts of the hydrological potential change on the energy matrix of the Brazilian State of Minas Gerais: A case study," Renewable and Sustainable Energy Reviews, Elsevier, vol. 110(C), pages 415-422.
    • Handle: RePEc:eee:rensus:v:110:y:2019:i:c:p:415-422
    DOI: 10.1016/j.rser.2019.05.018
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    References listed on IDEAS

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