Formulation of Technical, Economic and Environmental Efficiency Measures That Are Consistent With the Materials balance Condition

Timothy Coelli, Ludwig Lauwers and Guido Van Huylenbroec
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Guido Van Huylenbroec: CEPA - School of Economics, The University of Queensland, https://economics.uq.edu.au/cepa

No WP062005, CEPA Working Papers Series from University of Queensland, School of Economics

Abstract: The materials balance condition is a fundamental adding up condition, which essentially says that �what goes in must come out�. In this paper we argue that a number of the recently developed methods of incorporating pollution measures into standard productive efficiency models are inconsistent with this fundamental condition. We propose an alternative method that involves the incorporation of materials balance information into the production model in a similar manner to which price information is normally incorporated. This produces a new environmental efficiency measure that can be decomposed into technical and allocative components, in a similar manner to the conventional cost efficiency decomposition. The approach is illustrated with the case of phosphorus emission on Belgian pig-finishing farms, using data envelopment analysis (DEA). Our results indicate that a substantial proportion of nutrient pollution on these farms can be abated in a cost reducing manner.

Date: 2005-11
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Persistent link: https://EconPapers.repec.org/RePEc:qld:uqcepa:14

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