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Thispaper aims at presenting different pumped-storage solutions for improving theenergy efficiency and economic sustainability of water systems. The assessmentof pumped-storage solutions, either using fresh water or sea-water, is seen asa viable option to solve problems of energy production, as well as in theintegration of intermittent renewable energies, providing system flexibilitydue to energy loads’ fluctuation, as long as the storage of energy fromintermittent sources. Pumped-storage is one of the best and most efficientoptions in terms of renewable resources as an integrated solution allowing theimprovement of the energy system elasticity and the global system efficiency.Two real case studies are presented: a fresh water system installed in a riverdams—the Alqueva system, in Portugal—and a sea-water system in an arid regionof the Cape Verde Islands in Africa. These cases demonstrate the benefitsassociated to pumped-storage solutions, depending on the storage volumecapacity, operational rules and energy tariffs.

KEYWORDS

Pumped-Storage, Hydropower, Energy Efficiency, Renewable Energy

Cite this paper

Ramos, H. , Amaral, M. and Covas, D. 2014 Pumped-Storage Solution towards Energy Efficiency and Sustainability: Portugal Contribution and Real Case Studies. Journal of Water Resource and Protection, 6, 1099-1111. doi: 10.4236-jwarp.2014.612103.





Autor: Helena M. Ramos*, Maria P. Amaral, Didia I. C. Covas

Fuente: http://www.scirp.org/



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