Is big better? On scale and scope economies in the Portuguese water sector
The 'big is better' idea has recently been challenged in network industries. Scale economies are considered finite so that for the individual utility an optimal scale of operations arises. A similar observation yields for scope economies as joint production is not predicted univocally anymore. In the water sector, scale economies and joint production are preferred. Nevertheless, several countries are restructuring the sector in order to improve the scale and scope of operations. This article intends to provide some insights into this matter. We analyze the Portuguese water market structure using non-parametric techniques with data from the year 2005. After surveying the literature on scale and scope economies, we discuss the peculiarities of the Portuguese water sector. The paper confirms the natural monopoly features. Although scope economies are absent, it highlights scale economies. The optimal scale of the utilities is located between 160,000 and 180,000 inhabitants. As such, the Portuguese water sector optimally counts 60 water utilities.
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- Torres, Marcelo & Morrison Paul, Catherine J., 2006. "Driving forces for consolidation or fragmentation of the US water utility industry: A cost function approach with endogenous output," Journal of Urban Economics, Elsevier, vol. 59(1), pages 104-120, January.
- W. Briec & K. Kerstens & P. Vanden Eeckaut, 2006.
"Non-convex Technologies and Cost Functions: Definitions, Duality and Nonparametric Tests of Convexity,"
- Walter Briec & Kristiaan Kerstens & Philippe Venden Eeckaut, 2004. "Non-convex Technologies and Cost Functions: Definitions, Duality and Nonparametric Tests of Convexity," Journal of Economics, Springer, vol. 81(2), pages 155-192, 02.
- Briec, Walter & Kerstens, Kristiaan & Vyen Eeckaut, Philippe, 2002. "Non-Convex Technologies and Cost Functions: Definitions, Duality and Nonparametric Tests of Convexity," Efficiency Series Papers 2002/03, University of Oviedo, Department of Economics, Oviedo Efficiency Group (OEG).
- Banker, Rajiv D., 1984. "Estimating most productive scale size using data envelopment analysis," European Journal of Operational Research, Elsevier, vol. 17(1), pages 35-44, July.
- Tauchmann, Harald & Clausen, Hartmut, 2004. "Do Organizational Forms matter? An Econometric Analysis of Innovativeness in the German Wastewater Sector," RWI Discussion Papers 22, RWI - Leibniz-Institut für Wirtschaftsforschung.
- KERSTENS, Kristiaan & VANDEN EECKAUT, Philippe, 1997.
"Estimating returns to scale using nonparametric deterministic technologies : a new method based on goodness-of-fit,"
CORE Discussion Papers
1997013, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
- Kerstens, Kristiaan & Vanden Eeckaut, Philippe, 1999. "Estimating returns to scale using non-parametric deterministic technologies: A new method based on goodness-of-fit," European Journal of Operational Research, Elsevier, vol. 113(1), pages 206-214, February.
- Paola Fabbri & Giovanni Fraquelli, 2000. "Costs and Structure of Technology in the Italian Water Industry," Empirica, Springer;Austrian Institute for Economic Research;Austrian Economic Association, vol. 27(1), pages 65-82, March.
- Garcia, Serge & Moreaux, Michel & Reynaud, Arnaud, 2007.
"Measuring economies of vertical integration in network industries: An application to the water sector,"
International Journal of Industrial Organization,
Elsevier, vol. 25(4), pages 791-820, August.
- Garcia, Serge & Moreaux, Michel & Reynaud, Arnaud, 2004. "Measuring Economies of Vertical Integration in Network Industries: an Application to the Water Sector," IDEI Working Papers 255, Institut d'Économie Industrielle (IDEI), Toulouse.
- Berg, Sanford V & Marques, Rui Cunha, 2010. "Quantitative studies of water and sanitation utilities: a literature survey," MPRA Paper 32891, University Library of Munich, Germany.
- Hunt, Lester C & Lynk, Edward L, 1995. "Privatisation and Efficiency in the UK Water Industry: An Empirical Analysis," Oxford Bulletin of Economics and Statistics, Department of Economics, University of Oxford, vol. 57(3), pages 371-88, August.
- Luis R. Murillo-Zamorano, 2004. "Economic Efficiency and Frontier Techniques," Journal of Economic Surveys, Wiley Blackwell, vol. 18(1), pages 33-77, 02.
- Antonio Estache & Tim Coelli & Sergio Perelman & Lourdes Trujillo, 2003.
"A Primer on Efficiency Measurement for Utilities and Transport Regulators,"
ULB Institutional Repository
2013/44106, ULB -- Universite Libre de Bruxelles.
- Tim Coelli & Antonio Estache & Sergio Perelman & Lourdes Trujillo, 2003. "A Primer on Efficiency Measurement for Utilities and Transport Regulators," World Bank Publications, The World Bank, number 15149, November.
- R. D. Banker & A. Charnes & W. W. Cooper, 1984. "Some Models for Estimating Technical and Scale Inefficiencies in Data Envelopment Analysis," Management Science, INFORMS, vol. 30(9), pages 1078-1092, September.
- E L Lynk, 1993. "Privatisation, joint production and the comparative efficiencies of private and public ownership: the UK water industry case," Fiscal Studies, Institute for Fiscal Studies, vol. 14(2), pages 98-116, May.
- Banker, Rajiv D. & Thrall, R. M., 1992. "Estimation of returns to scale using data envelopment analysis," European Journal of Operational Research, Elsevier, vol. 62(1), pages 74-84, October.
- Fumitoshi Mizutani & Takuya Urakami, 2001. "articles: Identifying network density and scale economies for Japanese water supply organizations," Papers in Regional Science, Springer;Regional Science Association International, vol. 80(2), pages 211-230.
- Baumol, William J, 1977. "On the Proper Cost Tests for Natural Monopoly in a Multiproduct Industry," American Economic Review, American Economic Association, vol. 67(5), pages 809-22, December.
- Laurens Cherchye & Timo Kuosmanen & Thierry Post, 2000. "What Is the Economic Meaning of FDH? A Reply to Thrall," Journal of Productivity Analysis, Springer, vol. 13(3), pages 263-267, May.
- David S Saal & David Parker, 2000. "The impact of privatization and regulation on the water and sewerage industry in England and Wales: a translog cost function model," Managerial and Decision Economics, John Wiley & Sons, Ltd., vol. 21(6), pages 253-268.
- Fare, Rolf & Grosskopf, Shawna & Lovell, C A Knox, 1983. " The Structure of Technical Efficiency," Scandinavian Journal of Economics, Wiley Blackwell, vol. 85(2), pages 181-90.
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