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Carbon emission as a function of energy generation in hydroelectric reservoirs in Brazilian dry tropical biome

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  • Ometto, Jean P.
  • Cimbleris, André C.P.
  • dos Santos, Marco A.
  • Rosa, Luiz P.
  • Abe, Donato
  • Tundisi, José G.
  • Stech, José L.
  • Barros, Nathan
  • Roland, Fábio

Abstract

Most energy generation globally is fueled by coal and oil, raising concerns about greenhouse gas emissions. Hydroelectric reservoirs are anthropogenic aquatic systems that occur across a wide geographical extent, and, in addition to their importance for energy production, they have the potential to release two important greenhouse gases (GHGs), carbon dioxide and methane. We report results from an extensive study of eight hydroelectric reservoirs located in central and southeastern tropical Brazil. In the Brazilian dry tropical biome reservoirs, emissions (in tons of CO2 Eq. per MWh) varied from 0.01 to 0.55, and decreased with reservoir age. Total emissions were higher in the reservoir lake when compared to the river downstream the dam; however, emissions per unit area, in the first kilometer of the river after the dam, were higher than that in the reservoir. The results showed, despite higher carbon emissions per energy production in the youngest reservoirs, lower emission from hydroelectric reservoirs from the studied region in relation to thermo electrical supply, fueled by coal or fossil fuel. The ratio emission of GHG per MWh produced is an important parameter in evaluating the service provided by hydroelectric reservoir and for energy planning policies.

Suggested Citation

  • Ometto, Jean P. & Cimbleris, André C.P. & dos Santos, Marco A. & Rosa, Luiz P. & Abe, Donato & Tundisi, José G. & Stech, José L. & Barros, Nathan & Roland, Fábio, 2013. "Carbon emission as a function of energy generation in hydroelectric reservoirs in Brazilian dry tropical biome," Energy Policy, Elsevier, vol. 58(C), pages 109-116.
    • Handle: RePEc:eee:enepol:v:58:y:2013:i:c:p:109-116
    DOI: 10.1016/j.enpol.2013.02.041
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    References listed on IDEAS

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    1. Sovacool, Benjamin K., 2008. "Valuing the greenhouse gas emissions from nuclear power: A critical survey," Energy Policy, Elsevier, vol. 36(8), pages 2940-2953, August.
    2. Jim Giles, 2006. "Methane quashes green credentials of hydropower," Nature, Nature, vol. 444(7119), pages 524-524, November.
    3. Philip M. Fearnside & Salvador Pueyo, 2012. "Greenhouse-gas emissions from tropical dams," Nature Climate Change, Nature, vol. 2(6), pages 382-384, June.
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    1. Fearnside, Philip M., 2016. "Environmental and Social Impacts of Hydroelectric Dams in Brazilian Amazonia: Implications for the Aluminum Industry," World Development, Elsevier, vol. 77(C), pages 48-65.
    2. Gemechu, Eskinder & Kumar, Amit, 2022. "A review of how life cycle assessment has been used to assess the environmental impacts of hydropower energy," Renewable and Sustainable Energy Reviews, Elsevier, vol. 167(C).
    3. Bortoluzzi, Mirian & Furlan, Marcelo & dos Reis Neto, José Francisco, 2022. "Assessing the impact of hydropower projects in Brazil through data envelopment analysis and machine learning," Renewable Energy, Elsevier, vol. 200(C), pages 1316-1326.
    4. Arias-Gaviria, Jessica & van der Zwaan, Bob & Kober, Tom & Arango-Aramburo, Santiago, 2017. "The prospects for Small Hydropower in Colombia," Renewable Energy, Elsevier, vol. 107(C), pages 204-214.

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