Reducing greenhouse gas emissions of Amazon hydropower with strategic dam planning.

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ID: 57595
2019
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Abstract
Hundreds of dams have been proposed throughout the Amazon basin, one of the world's largest untapped hydropower frontiers. While hydropower is a potentially clean source of renewable energy, some projects produce high greenhouse gas (GHG) emissions per unit electricity generated (carbon intensity). Here we show how carbon intensities of proposed Amazon upland dams (median = 39 kg COeq MWh, 100-year horizon) are often comparable with solar and wind energy, whereas some lowland dams (median = 133 kg COeq MWh) may exceed carbon intensities of fossil-fuel power plants. Based on 158 existing and 351 proposed dams, we present a multi-objective optimization framework showing that low-carbon expansion of Amazon hydropower relies on strategic planning, which is generally linked to placing dams in higher elevations and smaller streams. Ultimately, basin-scale dam planning that considers GHG emissions along with social and ecological externalities will be decisive for sustainable energy development where new hydropower is contemplated.
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almeida2019reducingnature Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Almeida, Rafael M;Shi, Qinru;Gomes-Selman, Jonathan M;Wu, Xiaojian;Xue, Yexiang;Angarita, Hector;Barros, Nathan;Forsberg, Bruce R;García-Villacorta, Roosevelt;Hamilton, Stephen K;Melack, John M;Montoya, Mariana;Perez, Guillaume;Sethi, Suresh A;Gomes, Carla P;Flecker, Alexander S;
Journal Nature communications
Year 2019
DOI
10.1038/s41467-019-12179-5
URL
Keywords
synergistic effect biomass upgrading combustion behavior energy recovery surface functional groups

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