Estimating size and scope economies in the Portuguese water sector using the most appropriate functional form

Engineering Economist

Volumn 60, Issue 2, 2015, Pages 109-137

  Carvalho, Pedro ^a   Marques, Rui Cunha ^a  

^a UNIVERSITY OF LISBON   (Portugal)

Author keywords

[No Author keywords available]

Indexed keywords

COST FUNCTIONS;

COST STRUCTURE; ECONOMIES OF SCOPE; FUNCTIONAL FORMS; PORTUGAL; SCOPE ECONOMIES; WASTEWATER SERVICES; WATER SECTOR; WATER UTILITY;

WATER SUPPLY;

EID: 84928637873     PISSN: 0013791X     EISSN: 15472701     Source Type: Journal    
DOI: 10.1080/0013791X.2013.873507     Document Type: Article

References (38)

1. Abbott, M. and Cohen, B. (2009) Productivity and efficiency in the water industry. Utilities Policy, 17, 233-244.
2. Antonioli, B. and Filippini, M. (2001) The use of a variable cost function in the regulation of the Italian water industry. Utilities Policy, 10(3-4), 181-187.
3. Aubert, C. and Reynaud, A. (2005) The impact of regulation on cost efficiency: an empirical analysis of Wisconsin water utilities. Journal of Productivity Analysis, 23(3), 383-409.
4. Bottasso, A. and Conti, M. (2009) Scale economies, technology and technical change in the water industry: evidence from the English water only sector. Regional Science and Urban Economics, 39(2), 138-147.
5. Bottasso, A., Conti, M., Piacenza, M. and Vannoni, D. (2011) The appropriateness of the poolability assumption for multiproduct technologies: evidence from the English water and sewerage utilities. International Journal of Production Economics, 130(1), 112-117.
6. Brams, M.R. (1972) A case study of the application of cost benefit analysis to water system consolidation by local government. The Engineering Economist, 17, 99-114.
7. Cameron, A.C. and Trivedi, P.K. (2005) Microeconometrics: methods and application. Cambridge University Press, New York.
8. Carvalho, P. and Marques, R.C. (2014) Computing economies of vertical integration, economies of scope and economies of scale using partial frontier nonparametric methods. European Journal of Operational Research, 234(1), 292-307.
9. Carvalho, P., Marques, R.C. and Berg, S. (2012) A meta-regression analysis of benchmarking studies on water utilities market structure. Utilities Policy, 21, 40-49.
10. Caves, D.W., Christensen, L.R. and Tretheway, J.A. (1984) Economies of density versus economies of scale: why trunk and local service airline costs differ. Rand Journal of Economics, 15, 471-489.
11. Chambers, R.G. (1988) Applied production analysis. Cambridge University Press, New York.
12. Dahlgren, E., Gocmen, C., Lackner, K. and van Ryzin, G. (2013) Small modular infrastructure. The Engineering Economist, 58, 231-264.
13. De Witte, K. and Dijkgraaf, E. (2010) Mean and bold? On separating merger economies from structural efficiency gains in the drinking water sector. Journal of the Operational Research Society, 61, 222-234.
14. Diewert, W.E. and Wales, T.J. (1987) Flexible functional forms and global curvature conditions. Econometrica, 55(1), 43-68.
15. Farsi, M., Fetz, A. and Filippini, M. (2007) Economies of scale and scope in the Swiss multi-utilities sector. CEPE Working Paper 59, Centre for Energy Policy and Economics, ETH Zurich.
16. Farsi, M. and Filippini, M. (2009) An analysis of cost efficiency in Swiss multi-utilities. Energy Economics, 31(2), 306-315.
17. Ferro, G., Lentini, E. and Mercadier, A. (2010) Economies of scale in water and sanitation: a review of the literature. Working Paper Hal-00460661, HAL, Villeurbanne.
18. Filippini, M., Hrovatin, N. and Zorić, J. (2008) Cost efficiency of Slovenian water distribution utilities: an application of stochastic frontier methods. Journal of Productivity Analysis, 29(2), 169-182.
19. Ford, J. and Warford, J. (1969) Cost functions for the water industry. Journal of Industrial Economics, 18, 53-63.
20. Fraquelli, G. and Giandrone, R. (2003) Reforming the wastewater treatment sector in Italy: implications of plant size, structure, and scale economies. Water Resources Research, 39(10), 1293.
21. Fraquelli, G. and Moiso, V. (2005) Cost efficiency and economies of scale in the Italian water industry. Società Italiana di Economia Pubblica (SIEP), Dipartimento di Economia Pubblica e Territoriale-Università di Pavia.
22. Fraquelli, G., Piacenza, M. and Vannoni, D. (2004) Scope and scale economies in multi-utilities: evidence from gas, water and electricity combinations. Applied Economics, 36(18), 2045-2057.
23. Garcia, S. and Thomas, A. (2001) The structure of municipal water supply costs: application to a panel of French local communities. Journal of Productivity Analysis, 16(1), 5-29.
24. Giannakas, K., Tran, K.C. and Tzouvelekas, V. (2003) On the choice of functional form in stochastic frontier modeling. Empirical Economics, 28(1), 75-100.
25. Hunt, L. and Lynk, E. (1995) Privatization and efficiency in the UK water industry: an empirical analysis. Oxford Bulletin of Economics and Statistics, 57, 371-388.
26. Kim, H.Y. (1987) Economies of scale in multi-product firms: an empirical analysis. Economica, 54(214), 185-206.
27. Lau, L.J. (1986) Functional forms in econometric model building. In Handbook of Econometrics, Z. Griliches. and M.D. Intriligator., editors. North-Holland, Amsterdam, The Netherlands.
28. Martins, R., Fortunato, A. and Coelho, F. (2006) Cost structure of the Portuguese water industry: a cubic cost function application. Available at http://gemf.fe.uc.pt/workingpapers/abstracts/2006/resumo2006-09.htm (accessed 30 August 2013).
29. Mizutani, F. and Urakami, T. (2001) Identifying network density and scale economies for Japanese water supply organizations. Papers in Regional Science, 80(2), 211-230.
30. Murillo-Zamorano, L.R. (2004) Economic efficiency and frontier techniques. Journal of Economic Surveys, 18(1), 33-77.
31. Panzar, J.C. and Willig, R.D. (1981) Economies of scope. American Economic Review, 71, 268-272.
32. Pulley, L.B. and Braunstein, Y.M. (1992) A composite cost function for multiproduct firms with an application to economies of scope in banking. Review of Economics and Statistics, 74, 221-230.
33. Saal, D. and Parker, D. (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, 21(6), 253-268.
34. Saal, D. and Parker, D. (2006) Assessing the performance of water operations in the English and Welsh water industry: a lesson in the implications of inappropriately assuming a common frontier. In Performance measurement and regulation of network utilities, T. Coelli. and D. Lawrence., editors. Edward Elgar, Cheltenham.
35. Stone and Webster Consultants and Great Britain, Office of Water Services. (2004) Investigation into evidence for economies of scale in the water and sewerage industry in England and Wales: Final report. Stone & Webster Consultants, Birmingham.
36. Urakami, T. and Parker, D. (2011) The effects of consolidation amongst Japanese water utilities: a hedonic cost function analysis. Urban Studies, 48, 2805-2825.
37. Wales, T.J. (1977) On the flexibility of flexible functional forms: an empirical approach. Journal of Econometrics, 5(2), 183-193.
38. Zellner, A. (1962) An efficient method of estimating seemingly unrelated regressions and tests for aggregation bias. Journal of the American Statistical Association, 57(298), 348-368.