The vulnerability of hydropower production in the Zambezi River Basin to the impacts of climate change and irrigation development

  • Randall Spalding-Fecher
  • Arthur Chapman
  • Francis Yamba
  • Hartley Walimwipi
  • Harald Kling
  • Bernard Tembo
  • Imasiku Nyambe
  • Boaventura Cuamba
Original Article

Abstract

The Zambezi River Basin in southern Africa is relatively undeveloped from both a hydropower and irrigated agriculture perspective, despite the existence of the large Kariba and Cahora Bassa dams. Accelerating economic growth increases the potential for competition for water between hydropower and irrigated agriculture, and climate change will add additional stresses to this system. The objective of this study was to assess the vulnerability of major existing and planned new hydropower plants to changes in climate and upstream irrigation demand. Our results show that Kariba is highly vulnerable to a drying climate, potentially reducing average electricity generation by 12 %. Furthermore, the expansion of Kariba generating capacity is unlikely to deliver the expected increases in production even under a favourable climate. The planned Batoka Gorge plant may also not be able to reach the anticipated production levels from the original feasibility study. Cahora Bassa’s expansion is viable under a wetting climate, but its potential is less likely to be realised under a drying climate. The planned Mphanda Nkuwa plant can reach expected production levels under both climates if hydropower is given water allocation priority, but not if irrigation is prioritised, which is likely. For both Cahora Bassa and Mphanda Nkuwa, prioritising irrigation demand over hydropower could severely compromise these plants’ output. Therefore, while climate change is the most important overall driver of variation in hydropower potential, increased irrigation demand will also have a major negative impact on downstream plants in Mozambique. This implies that climate change and upstream development must be explicitly incorporated into both project and system expansion planning.

Keywords

Climate impacts Hydropower Southern Africa Irrigation Zambezi River Basin Development impacts 

References

  1. Allen RG, Pereira LS, Raes D, et al. (1998) Crop evapotranspiration—guidelines for computing crop water requirements—FAO irrigation and drainage paper 56. Rome: Food Agricultural Organisation of the United Nations. http://www.fao.org/docrep/X0490E/x0490e00.htm
  2. Arnell NW (1999) Climate change and global water resources. Global Environ Change 9(Supplement)1:S31–S49. doi:10.1016/S0959-3780(99)00017-5
  3. Arnell NW (2004) Climate change and global water resources: SRES emissions and socio-economic scenarios. Glob Environ Chang 14:31–52. doi:10.1016/j.gloenvcha.2003.10.006 CrossRefGoogle Scholar
  4. Arnell NW, Hudson DA, Jones RG (2003) Climate change scenarios from a regional climate model: estimating change in runoff in southern Africa. J Geophys Res 108:4519. doi:10.1029/2002JD002782 CrossRefGoogle Scholar
  5. Bank of Zambia (2014) Economics: Zambia—snap shot: country data. http://www.boz.zm
  6. Bates B, Kundzewicz Z, Wu S, Palutikof J (2008) Climate change and water. (IPCC Technical Paper VI). Intergovernmental Panel on Climate Change, GenevaGoogle Scholar
  7. Baxter LW, Calandri K (1992) Global warming and electricity demand. Energy Policy 20:233–244. doi:10.1016/0301-4215(92)90081-C CrossRefGoogle Scholar
  8. Beck L, Bernauer T (2011) How will combined changes in water demand and climate affect water availability in the Zambezi river basin? Global Environ Change 21(3):1061–1072CrossRefGoogle Scholar
  9. Beilfuss R (2001) Prescribed flooding and restoration potential in the Zambezi Delta, Mozambique. Working Paper #4. Program for the Sustainable Management of the Cahora Bassa Dam and the Lower Zambezi Valley. International Crane Foundation, Baraboo, WisconsinGoogle Scholar
  10. Beilfuss R (2010) Modelling trade-offs between hydropower generation and environmental flow scenarios: a case study of the Lower Zambezi River Basin, Mozambique. Int J River 8:331–347CrossRefGoogle Scholar
  11. Beilfuss R (2012) A risky climate for southern African hydro: assessing hydrological risks and consequences for Zambezi River Basin dams. Technical report, International Rivers, Berkeley, CaliforniaGoogle Scholar
  12. Beilfuss R, dos Santos D (2001) Patterns of hydrological change in the Zambezi Delta. Technical report, Working Paper 2. Program for the Sustainable Management of Cahora Bassa Dame and the Lower Zambezi Valley. International Crane Foundation, Wisconsin, USAGoogle Scholar
  13. Bhartendu S, Cohen SJ (1987) Impact of CO2-induced climate change on residential heating and cooling energy requirements in Ontario, Canada. Energy Build 10:99–108. doi:10.1016/0378-7788(87)90012-0 CrossRefGoogle Scholar
  14. Cilliers J, Hughes B, Moyer J (2011) African futures 2050: the next forty years. Technical report, Institute for Security Studies, Pretoria. Monograph 175Google Scholar
  15. Dai A, Qian T, Trenberth K (2009) Changes in continental freshwater discharge from 1948 to 2004. J Clim 22:2773–2792CrossRefGoogle Scholar
  16. De Lucena AFP, Szklo AS, Schaeffer R et al (2009) The vulnerability of renewable energy to climate change in Brazil. Energy Policy 37:879–889CrossRefGoogle Scholar
  17. Ebinger J, Vergara W (2011) Climate impacts on energy systems: key issues for energy sector adaptation. World Bank, WashingtonCrossRefGoogle Scholar
  18. EU (2011) Integrated Project Water and Global Change. http://www.eu-watch.org/ Accessed 1 Feb 2012.
  19. Euroconsult, Mott MacDonald (2007) Integrated water resources management strategy and implementation plan for the Zambezi River Basin. Technical report, Final Report, Rapid Assessment. Gaborone, Botswana and Lusaka, Zambia: South African Development Community Water Division and Zambezi River Authority. http://www.elmed-rostov.ru/Projects/Zamwis_php/Reports/RA%20Water%20Resources%20Zambezi%2002Jan2008.pdf
  20. Frederick KD, Major DC (1997) Climate change and water resources. Climate Change 37:7–23. doi:10.1023/A:1005336924908 CrossRefGoogle Scholar
  21. Gandolfi C, Salewicz K (1991) Water resources management in the Zambezi Valley: analysis of the Kariba operation. In: IAHS Publ. No. 201, Proceedings of the Vienna Symposium, August 1991Google Scholar
  22. Golombek R, Kittelsen SAC, Haddeland I (2012) Climate change: impacts on electricity markets in Western Europe. Clim Chang 113:357–370. doi:10.1007/s10584-011-0348-6 CrossRefGoogle Scholar
  23. Gupta H, Kling H, Yilmaz K et al (2009) Decomposition of the mean squared error and NSE performance criteria: implications for improving hydrological modelling. J Hydrol 377(1–2):80–91. doi:10.1016/j.jhydrol.2009.08.003 CrossRefGoogle Scholar
  24. Hamlet AF, Lee S-Y, Mickelson KEB, Elsner MM (2010) Effects of projected climate change on energy supply and demand in the Pacific Northwest and Washington State. Clim Chang 102:103–128. doi:10.1007/s10584-010-9857-y CrossRefGoogle Scholar
  25. Hamududu B, Killingtveit A (2012) Assessing climate change impacts on global hydropower. Energies 5:305–322CrossRefGoogle Scholar
  26. Harrison GP, Whittington HW (2002) Susceptibility of the Batoka Gorge hydroelectric scheme to climate change. J Hydrol 264:230–241CrossRefGoogle Scholar
  27. Harrison GP, Whittington HW, Wallace AR (2006) Sensitivity of hydropower performance to climate change. International Journal of Power and Energy Systems 26Google Scholar
  28. Heyns P (2003) Water resources in Southern Africa. Technical report. In Nakayama M (ed) Introduction: opportunities and risks. International waters in Southern Africa - United Nations University., pp 5–37Google Scholar
  29. Hoekstra A (2003) Water scarcity in the Zambezi basin in the long-term future: a risk assessment. Integr Assess 4(3):185–204CrossRefGoogle Scholar
  30. Höllermann B, Giertz S, Diekkrüger B (2010) Benin 2025—balancing future water availability and demand using the WEAP “Water Evaluation and Planning” system. Water Resour Manag 24:3591–3613. doi:10.1007/s11269-010-9622-z CrossRefGoogle Scholar
  31. Howells M, Hermann S, Welsch M et al (2013) Integrated analysis of climate change, land-use, energy and water strategies. Nat Clim Chang 3:621–626. doi:10.1038/nclimate1789 CrossRefGoogle Scholar
  32. Hughes B (2009) Forecasting long-term global change: introduction to International Futures (IFs). Technical report. Frederick S. Pardee Center for International Futures, Josef Korbel School of International Studies, University of DenverGoogle Scholar
  33. Hughes B, Hossain A, Irfan M (2004) The structure of International Futures (IFs). Technical report, Graduate School of International Studies, University of DenverGoogle Scholar
  34. Hughes B, Irfan M, Khan H et al. (2009) Reducing global poverty: patterns of potential human progress: volume 1, technical report. Frederick S. Pardee Center for International Futures, University of DenverGoogle Scholar
  35. Isaac M, van Vuuren DP (2009) Modeling global residential sector energy demand for heating and air conditioning in the context of climate change. Energy Policy 37:507–521. doi:10.1016/j.enpol.2008.09.051 CrossRefGoogle Scholar
  36. Jiang T, Chen YD, Xu C et al (2007) Comparison of hydrological impacts of climate change simulated by six hydrological models in the Dongjiang Basin, South China. J Hydrol 336:316–333. doi:10.1016/j.jhydrol.2007.01.010 CrossRefGoogle Scholar
  37. Jury M, Enfield D, Mélice J-L (2002) Tropical monsoons around Africa: stability of El Niño–Southern Oscillation associations and links with continental climate. J Geophys Res Oceans (1978–2012) 107(C10):15-1–15-17. doi:10.1029/2000JC000507 Google Scholar
  38. Kling H, Fuchs M, Paulin M (2012) Runoff conditions in the upper Danube basin under an ensemble of climate change scenarios. J Hydrol 424–425:264–277. doi:10.1016/j.jhydrol.2012.01.011 CrossRefGoogle Scholar
  39. Kling H, Stanzel P, Preishuber M (2014) Impact modelling of water resources development and climate scenarios on Zambezi River discharge. J Hydrol Reg Stud 1:17–43. doi:10.1016/j.ejrh.2014.05.002 CrossRefGoogle Scholar
  40. Lehner B, Czisch G, Vassolo S (2005) The impact of global change on the hydropower potential of Europe: a model-based analysis. Energy Policy 33:839–855. doi:10.1016/j.enpol.2003.10.018 CrossRefGoogle Scholar
  41. Madani K, Lund JR (2010) Estimated impacts of climate warming on California’s high-elevation hydropower. Clim Chang 102:521–538. doi:10.1007/s10584-009-9750-8 CrossRefGoogle Scholar
  42. Matos J, Cohen T, Boillat J et al (2010) In: Christodoulou, Stamou (eds) Analysis of flow regime changes due to operation of large reservoirs on the Zambezi River. Taylor & Francis Group, London, pp 337–342Google Scholar
  43. Mehta VK, Rheinheimer DE, Yates D et al (2011) Potential impacts on hydrology and hydropower production under climate warming of the Sierra Nevada. J Water Clim Chang 2:29. doi:10.2166/wcc.2011.054 CrossRefGoogle Scholar
  44. Nexant (2007) SAPP regional generation and transmission expansion plan study. Draft Report. Volume 2. Main Report, Technical report. Submitted to: Southern Africa Power Pool Coordination Centre. Nexant: San FranciscoGoogle Scholar
  45. Purkey DR, Joyce B, Vicuna S et al (2007) Robust analysis of future climate change impacts on water for agriculture and other sectors: a case study in the Sacramento Valley. Clim Chang 87:109–122. doi:10.1007/s10584-007-9375-8 CrossRefGoogle Scholar
  46. Richard Y, Fauchereau N, Poccard I et al (2001) 20th century droughts in southern Africa: spatial and temporal variability, teleconnections with oceanic and atmospheric conditions. Int J Climatol 21:873–885CrossRefGoogle Scholar
  47. Roeckner E, Bäum G, Bonaventura L et al. (2003) The atmospheric general circulation model ECHAM5. Part 1: model description. Technical report. Max-Planck-Institut für Meteorologie. MPI Report No. 349. http://www.mpimet.mpg.de/fileadmin/publikationen/Reports/max_scirep_349.pdf
  48. SADC (2011) Dam synchronisation and flood releases in the Zambezi River Basin project. Annex 2. Concepts and recommendations for dam management. Southern African Development Community, GaboroneGoogle Scholar
  49. Salas-Mélia D, Chauvin F, Déqué M et al. (2005) Description and validation of the CNRM-CM3 global coupled model. Technical report, CNRM working note 103 http://www.cnrm.meteo.fr/scenario2004/references_eng.html
  50. Sattler S, Macknick J, Yates D et al (2012) Linking electricity and water models to assess electricity choices at water-relevant scales. Environ Res Lett 7:045804. doi:10.1088/1748-9326/7/4/045804 CrossRefGoogle Scholar
  51. Schaeffer R, Szklo AS, Pereira de Lucena AF et al (2012) Energy sector vulnerability to climate change: a review. Energy 38:1–12. doi:10.1016/j.energy.2011.11.056 CrossRefGoogle Scholar
  52. Sieber J, Purkey D (2011) WEAP: Water Evaluation and Planning System. User guide, 2011. Technical report. Somerville, MA: Stockholm Environment Institute, U.S. Center http://weap21.org/downloads/WEAP_User_Guide.pdf
  53. Thiemig V, Rojas R, Zambrano-Bigiarini M et al (2013) Hydrological evaluation of satellite-based rainfall estimates over the Volta and Baro-Akobo Basin. J Hydrol 499:324–338CrossRefGoogle Scholar
  54. Tilmant A, Kinzelbach W, Juizo D et al. (2011) Economic valuation of benefits and costs associated with the coordinated development and management of the Zambezi River Basin. Water Policy. doi:10.2166/wp.2011.189. http://www.iwaponline.com/wp/up/wp2011189.htm
  55. Varela-Ortega C, Blanco-Gutiérrez I, Swartz CH, Downing TE (2011) Balancing groundwater conservation and rural livelihoods under water and climate uncertainties: an integrated hydro-economic modeling framework. Glob Environ Chang 21:604–619. doi:10.1016/j.gloenvcha.2010.12.001 CrossRefGoogle Scholar
  56. White F (1983) The vegetation of Africa: a descriptive memoir to accompany the UNESCO/AETFAT/UNSO vegetation map of Africa. Unesco, ParisGoogle Scholar
  57. Wilbanks TJ, Bhatt V, Bilello DE, et al. (eds) (2007) CCSP, 2007: effects of climate change on energy production and use in the United States. A Report by the U.S. Climate Change Science Program and the subcommittee on Global Change Research. Department of Energy, Office of Biological & Environmental Research, Washington, DCGoogle Scholar
  58. World Bank (2010a) The Zambezi River Basin: a multi-sector investment opportunities analysis. Volume 1. Summary report. Washington, D C, World BankGoogle Scholar
  59. World Bank (2010b) The Zambezi River Basin: a multi-sector investment opportunities analysis. Volume 2. Basin development scenarios, technical report. Washington, D C, World BankGoogle Scholar
  60. World Bank (2010c) The Zambezi River Basin: a multi-sector investment opportunities analysis. Volume 4. Modeling, analysis and input data. Technical report. Washington, D C, World BankGoogle Scholar
  61. World Bank (2014) Data: electricity production from hydroelectric sources (% of total). The World Bank, World Development Indicators, http://data.worldbank.org/indicator/EG.ELC.HYRO.ZS
  62. Yamba F, Walimwipi D, Jain S et al (2011) Climate change/variability implications on hydroelectricity generation in the Zambezi River Basin. Mitig Adapt Strateg Glob Clim Chang 16:617–628. doi:10.1007/s11027-011-9283-0 CrossRefGoogle Scholar
  63. Yates D, Sieber J, Purkey et al (2005) WEAP21—a demand-, priority-, and preference-driven water planning model: part 1: model characteristics. Water Int 30(4):487–500. doi:10.1080/02508060508691893 CrossRefGoogle Scholar
  64. Yates DN, Miller KA (2013) Integrated decision support for energy/water planning in California and the Southwest. Int J Climat Chang Impacts Respon 4:49–64Google Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  • Randall Spalding-Fecher
    • 1
  • Arthur Chapman
    • 2
  • Francis Yamba
    • 3
  • Hartley Walimwipi
    • 4
  • Harald Kling
    • 5
  • Bernard Tembo
    • 6
  • Imasiku Nyambe
    • 7
  • Boaventura Cuamba
    • 8
  1. 1.Carbon Limits ASPelhamUSA
  2. 2.OneWorld Sustainable InvestmentsCape TownSouth Africa
  3. 3.Centre for Energy Environment and Engineering ZambiaLusakaZambia
  4. 4.Snow Systems ZambiaLusakaZambia
  5. 5.Poyry EnergyViennaAustria
  6. 6.University College LondonLondonUK
  7. 7.University of ZambiaLusakaZambia
  8. 8.University of Eduardo MondlaneMaputoMozambique

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