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Assessing the impacts of climate change on hydropower generation and the power sector in Portugal: A partial equilibrium approach

Carla Teotónio, Patrícia Fortes, Peter Roebeling, Miguel Rodriguez () and Margarita Robaina-Alves

Renewable and Sustainable Energy Reviews, 2017, vol. 74, issue C, 788-799

Abstract: Hydropower plays a major role in the Portuguese electrical mix. Given the projected impacts of climate change on the availability of water resources, effects on hydropower generation are widely recognized though scantily quantified in literature. Considering projected climate change impacts on water resources in Portugal, we use a partial equilibrium bottom-up optimization model (TIMES_PT) to assess the effects of climate change on the Portuguese electrical system by 2050 – particularly focusing on the impacts on water resources availability and hydropower generation. Results show that hydropower generation may decrease by 41% in 2050. Hydropower will remain one of the most cost-effective technologies in the power sector, though it will lose as compared to other renewable energy sources (solar PV and wind power) due to, not only, the almost fully exploited endogenous hydropower potential, but also, due to climate change impacts. This will result in higher electricity prices (up to a 17% increase). Moreover, the stronger the climate change impacts the higher the levels of greenhouse gas emissions (up to 7.2% increase) – thus demanding stronger political action to comply with EU climate goals for 2050.

Keywords: Climate change; Water resources availability; Hydropower; Power sector; Partial equilibrium approach (search for similar items in EconPapers)
Date: 2017
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DOI: 10.1016/j.rser.2017.03.002

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