Sustainable application of renewable sources in water pumping systems: Optimized energy system configuration

摘要: Abstract Eighteen years ago, in Portugal, the expenses a water supply system associated with energy consumption were quite low. However, successive crises of fuel and increase tariff as well demand, is becoming larger more important part total budget pumping systems. Also, new governmental policies, essentially developed countries, are trying to implement renewable energies. For these reasons, case-study Portugal was analysed operate connected solar wind sources. A stand-alone grid-connected systems tested. The stand alone compared cost extending national electric grid. In two solutions analysed, one turbine another without. To be able turbine, pump needed necessary for production. case without proved cost-effective because not yet so competitive turbines.