دانلود مقاله ISI انگلیسی شماره 42167
عنوان فارسی مقاله

سدهای آبی که توسط بانک جهانی در سالهای 1976-2005 تامین مالی شده است ارزشمند هستند؟

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
42167 2015 11 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
Were the hydro dams financed by the World Bank from 1976 to 2005 worthwhile?
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Energy Policy, Volume 86, November 2015, Pages 222–232

کلمات کلیدی
سدها - برق آبی - ارزیابی سرمایه گذاری - سیاست انرژی - بانک جهانی
پیش نمایش مقاله
پیش نمایش مقاله سدهای آبی که توسط بانک جهانی در سالهای 1976-2005  تامین مالی شده است ارزشمند هستند؟

چکیده انگلیسی

Because hydro dams are complex to design and usually involve long-term planning, they are particularly susceptible to cost and time overruns. The controversy surrounding their development remains an unresolved issue in the energy policy debate. This study re-examines the cost issues associated with a portfolio of 58 dams that were financed by the World Bank from 1976 to 2005. Further, an estimate is made of the value of the benefits produced by these investments to determine the magnitude of economic rates of return for the individual projects and the overall portfolio of dams. Even though this portfolio of dams suffered substantially from cost overruns, the net contribution of these dams has been positive and substantial. The ex-post real economic rate of return for the entire portfolio is estimated to be greater than 17 percent. The important policy implication of this study is that each investment in a hydro dam needs to be appraised taking into consideration the distribution and probabilities of costs that might be incurred, as well as the potential benefits. Adequate margins must exist of ex-ante benefits over costs to account for the risks of cost overruns.

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