Adjusting Green NNP to Measure Sustainability |
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Authors: | Geir B Asheim |
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Institution: | University of Oslo, N-0317 Oslo, Norway |
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Abstract: | Weitzman provides a foundation for NNP as the stationary equivalent of a wealth-maximizing path when there is a constant interest rate and no exogenous technological progress. Here, the implications of Weitzman's foundation are explored in a case encountered in resource models, i.e., the case of non-constant interest rates. In a setting that allows for exogenous technological progress, an expression for NNP is obtained that adjusts Green NNP for anticipated capital gains and interest rate effects to produce a measure that indicates sustainability. This result is important when measuring the relative sustainability of resource rich and resource poor countries. |
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