Dépôt numérique

Freshwater use of the energy sector in Africa.

Gonzalez Sanchez, Rocio; Seliger, Roman; Fahl, Fernando; De Felice, Luca; Ouarda, Taha B. M. J. ORCID logoORCID: https://orcid.org/0000-0002-0969-063X et Farinosi, Fabio (2020). Freshwater use of the energy sector in Africa. Applied Energy , vol. 270 . p. 115171. DOI: 10.1016/j.apenergy.2020.115171.

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The fast economic and population growth in the African continent will lead to an important increase in demand for energy and water resources. Unfortunately, very few studies have addressed water use for energy production in Africa. This study focuses on water consumption and withdrawals throughout the different stages of energy production (fuel production, power plant construction and operation) in African countries. An in-depth analysis of water loss through evaporation in hydropower reservoirs is also performed due to the important role it plays in many countries and its severe impacts on electricity generation during the increasingly frequent droughts in Africa. The results indicate that in the year 2016, a total of 42 billion cubic meters of water was lost through evaporation in hydropower reservoirs compared to 1.2 billion cubic meters from all the other fuel types combined. Oil extraction and refining dominate water use for fuel production and non-hydro renewable energies have an almost negligible impact on the overall water use (10 million cubic meters). Fuelwood is shown to be a high consumer of water accounting for 4.5 billion cubic meters. The use of non-hydro renewable energies instead of fossil fuels can contribute significantly to reduce water use while covering the growing energy needs in Africa. Modern technologies that substitute fuelwood use in households would also reduce the impacts on water resources. The hydropower potential remains largely untapped in several regions of the continent. Nevertheless, new hydropower developments need to be carefully considered especially in regions characterized by severe water scarcity.

Type de document: Article
Mots-clés libres: water-energy nexus; Africa; energy production; hydropower; power generation; water for energy
Centre: Centre Eau Terre Environnement
Date de dépôt: 08 mars 2021 19:43
Dernière modification: 15 févr. 2022 20:32
URI: https://espace.inrs.ca/id/eprint/11426

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