Greenhouse gas emissions of hydropower in the Mekong River Basin

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en Räsänen, Timo A. Varis, Olli Scherer, Laura Kummu, Matti 2018-06-29T12:49:58Z 2018-06-29T12:49:58Z 2018-03-01
dc.identifier.citation Räsänen , T A , Varis , O , Scherer , L & Kummu , M 2018 , ' Greenhouse gas emissions of hydropower in the Mekong River Basin ' Environmental Research Letters , vol 13 , no. 3 , 034030 . DOI: 10.1088/1748-9326/aaa817 en
dc.identifier.issn 1748-9318
dc.identifier.issn 1748-9326
dc.identifier.other PURE UUID: eb6ac58a-78c0-4b16-8648-10c478cde88d
dc.identifier.other PURE ITEMURL:
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dc.description.abstract The Mekong River Basin in Southeast Asia is undergoing extensive hydropower development, but the magnitudes of related greenhouse gas emissions (GHG) are not well known. We provide the first screening of GHG emissions of 141 existing and planned reservoirs in the basin, with a focus on atmospheric gross emissions through the reservoir water surface. The emissions were estimated using statistical models that are based on global emission measurements. The hydropower reservoirs (119) were found to have an emission range of 0.2-1994 kg CO2e MWh-1 over a 100 year lifetime with a median of 26 kg CO2e MWh-1. Hydropower reservoirs facilitating irrigation (22) had generally higher emissions reaching over 22 000 kg CO2e MWh-1. The emission fluxes for all reservoirs (141) had a range of 26-1813 000 t CO2e yr-1 over a 100 year lifetime with a median of 28 000 t CO2e yr-1. Altogether, 82% of hydropower reservoirs (119) and 45% of reservoirs also facilitating irrigation (22) have emissions comparable to other renewable energy sources (<190 kg CO2e MWh-1), while the rest have higher emissions equalling even the emission from fossil fuel power plants (>380 kg CO2e MWh-1). These results are tentative and they suggest that hydropower in the Mekong Region cannot be considered categorically as low-emission energy. Instead, the GHG emissions of hydropower should be carefully considered case-by-case together with the other impacts on the natural and social environment. en
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries Environmental Research Letters en
dc.relation.ispartofseries Volume 13, issue 3 en
dc.rights openAccess en
dc.subject.other Renewable Energy, Sustainability and the Environment en
dc.subject.other Environmental Science(all) en
dc.subject.other Public Health, Environmental and Occupational Health en
dc.subject.other 218 Environmental engineering en
dc.subject.other renewable energy en
dc.title Greenhouse gas emissions of hydropower in the Mekong River Basin en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Built Environment
dc.contributor.department Leiden University
dc.subject.keyword greenhouse gas emissions
dc.subject.keyword hydropower
dc.subject.keyword Mekong River
dc.subject.keyword renewable energy
dc.subject.keyword Southeast Asia
dc.subject.keyword Renewable Energy, Sustainability and the Environment
dc.subject.keyword Environmental Science(all)
dc.subject.keyword Public Health, Environmental and Occupational Health
dc.subject.keyword 218 Environmental engineering
dc.identifier.urn URN:NBN:fi:aalto-201806294028
dc.identifier.doi 10.1088/1748-9326/aaa817
dc.type.version publishedVersion

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