Estimating global climate change impacts on hydropower projects : applications in India, Sri Lanka and Vietnam
AbstractThe world is faced with considerable risk and uncertainty about climate change. Particular attention has been paid increasingly to hydropower generation in recent years because it is renewable energy. However, hydropower is among the most vulnerable industries to changes in global and regional climate. This paper aims to examine the possibility of applying a simple vector autoregressive model to forecast future hydrological series and evaluate the resulting impact on hydropower projects. Three projects are considered - in India, Sri Lanka, and Vietnam. The results are still tentative in terms of both methodology and implications; but the analysis shows that the calibrated dynamic forecasts of hydrological series are much different from the conventional reference points in the 90 percent dependable year. The paper also finds that hydrological discharges tend to increase with rainfall and decrease with temperature. The rainy season would likely have higher water levels, but in the lean season water resources would become even more limited. The amount of energy generated would be affected to a certain extent, but the project viability may not change so much. Comparing the three cases, it is suggested that having larger installed capacity and some storage capacity might be useful to accommodate future hydrological series and seasonality. A broader assessment will be called for at the project preparation stage.
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Bibliographic InfoPaper provided by The World Bank in its series Policy Research Working Paper Series with number 4344.
Date of creation: 01 Sep 2007
Date of revision:
Climate Change; Hydro Power; Energy Production and Transportation; Water and Energy; Global Environment Facility;
This paper has been announced in the following NEP Reports:
- NEP-ALL-2007-09-24 (All new papers)
- NEP-ENE-2007-09-24 (Energy Economics)
- NEP-ENV-2007-09-24 (Environmental Economics)
- NEP-PPM-2007-09-24 (Project, Program & Portfolio Management)
- NEP-SEA-2007-09-24 (South East Asia)
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