Economic Analysis of a Rainwater Harvesting System in a Commercial Building

C. Matos (), I. Bentes, C. Santos, M. Imteaz and S. Pereira
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C. Matos: http://www.utad.pt

Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), 2015, vol. 29, issue 11, 3986 pages

Abstract: This research evaluates which is the most cost-efficient rainwater harvesting (RWH) system in a new commercial building located in the north of Portugal, in Braga. Based on the economic analysis, the cost-efficiency of the presented RWH strategies may be considered for the case studied. The results of this research indicate that RWH scenarios proposed are cost-efficient. Considering a 10 % discount rate, the water price charge in the municipally of Braga and the cost of the infrastructures would be enough to make RWH cost-efficient for this option. At this discount rate, the payback period ranges from 2 to 6 years and the internal rate of return would range from 23 to 76 %. If a discount rate of 5 % were considered, the payback periods would be reduced by approximately 1 year. Copyright Springer Science+Business Media Dordrecht 2015

Keywords: Rainwater harvesting system; Commercial building; Economic analysis (search for similar items in EconPapers)
Date: 2015
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Citations: View citations in EconPapers (8)

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DOI: 10.1007/s11269-015-1040-9

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