Articles | Volume 376
https://doi.org/10.5194/piahs-376-3-2018
https://doi.org/10.5194/piahs-376-3-2018
01 Feb 2018
 | 01 Feb 2018

Modelling the water energy nexus: should variability in water supply impact on decision making for future energy supply options?

James D. S. Cullis, Nicholas J. Walker, Fadiel Ahjum, and Diego Juan Rodriguez

Cited articles

Aurecon: Development of a reconciliation strategy for the Olifants River Water Supply System: water requirements and water resources report, Report to Department of Water Affairs, Pretoria, RSA, report no.: P WMA 04/B50/00/8310/6, 2011.
Aurecon: Modelling the Water Energy Nexus in South Africa Task 1 Report: Development of Regional Marginal Water Supply Cost Curves, Document prepared by: James Cullis and Nicholas Walker, Aurecon South Africa (Pty) LTD, for the World Bank Thirsty Energy Program, 22 September 2014, 2014.
Bazilian, M., Rogner, H., Howells, M., Hermann, S., Arent, D., Gielen, D., Steduto, P., Mueller, A., Komor, P., Tol, R. S. J., and Yumkella, K. K.: Considering the energy, water and food nexus: Towards an integrated modelling approach, Energ. Policy, 39, 7896–7906, doi:10.1016/j.enpol.2011.09.039, 2011.
Department of Water Affairs (DWA): Development of an Integrated Water Quality Management Plan for the Vaal River System Task 5: Water Quality Economic Impact Modelling Final Report, Department of Water Affairs & Forestry, Pretoria, South Africa, Report No. PRSA C000/00/2305/4, September 2009.
Department of Water Affairs (DWA): Assessment of the ultimate potential and future marginal cost of water resources in South Africa DWA Report No. P RSA 000/00/125610, Department of Water Affairs, Pretoria, South Africa, September 2010a.
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Short summary
This study describes a model for incorporating regional variability in water supply costs into an energy planning model and the impacts of this on the most sustainable future energy mix for a country as well as the potential impact that energy related policies can have on the future of water supply availability in different regions. Modeling of the water-energy nexus is particularly relevant as water supply becomes more variable due to climate change and a potential constraint on development.