IDEAS home Printed from https://ideas.repec.org/a/eee/juipol/v38y2016icp18-32.html
   My bibliography  Save this article

Performance of the Tunisian Water Utility: An input-distance function approach

Author

Listed:
  • Mellah, Thuraya
  • Ben Amor, Tawfik

Abstract

The main objective of this paper is to analyse the performance pattern in the Tunisian drinking water industry. The industry is a state monopoly, administered by the Tunisian Water Utility (TWU) since 1968. We apply the stochastic distance frontier method to TWU data over a period of 11 years, from 1999 to 2009. This approach is used to estimate water production technology, to measure technical efficiency levels and total factor productivity growth, and to investigate the factors influencing efficiency levels and those driving productivity growth. The results suggest that performance-based regulation can improve efficiency and enhance productivity in the Tunisian water industry.

Suggested Citation

  • Mellah, Thuraya & Ben Amor, Tawfik, 2016. "Performance of the Tunisian Water Utility: An input-distance function approach," Utilities Policy, Elsevier, vol. 38(C), pages 18-32.
  • Handle: RePEc:eee:juipol:v:38:y:2016:i:c:p:18-32
    DOI: 10.1016/j.jup.2015.11.001
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0957178715300734
    Download Restriction: Full text for ScienceDirect subscribers only

    File URL: https://libkey.io/10.1016/j.jup.2015.11.001?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Garcia, Serge & Reynaud, Arnaud, 2004. "Estimating the benefits of efficient water pricing in France," Resource and Energy Economics, Elsevier, vol. 26(1), pages 1-25, March.
    2. Antonio Estache & MartÌn A. Rossi, 2002. "How Different Is the Efficiency of Public and Private Water Companies in Asia?," The World Bank Economic Review, World Bank, vol. 16(1), pages 139-148, June.
    3. Byrnes, Joel & Crase, Lin & Dollery, Brian & Villano, Renato, 2010. "The relative economic efficiency of urban water utilities in regional New South Wales and Victoria," Resource and Energy Economics, Elsevier, vol. 32(3), pages 439-455, August.
    4. Coelli, Tim J. & Battese, George E., 1996. "Identification Of Factors Which Influence The Technical Inefficiency Of Indian Farmers," Australian Journal of Agricultural Economics, Australian Agricultural and Resource Economics Society, vol. 40(2), pages 1-26, August.
    5. Tim Coelli & Antonio Estache & Sergio Perelman & Lourdes Trujillo, 2003. "A Primer on Efficiency Measurement for Utilities and Transport Regulators," World Bank Publications - Books, The World Bank Group, number 15149, December.
    6. Rolf Färe & Carlos Martins-Filho & Michael Vardanyan, 2010. "On functional form representation of multi-output production technologies," Journal of Productivity Analysis, Springer, vol. 33(2), pages 81-96, April.
    7. Aude Le Lannier & Simon Porcher, 2014. "Efficiency in the public and private French water utilities: prospects for benchmarking," Applied Economics, Taylor & Francis Journals, vol. 46(5), pages 556-572, February.
    8. Kristof Witte & David Saal, 2010. "Is a little sunshine all we need? On the impact of sunshine regulation on profits, productivity and prices in the Dutch drinking water sector," Journal of Regulatory Economics, Springer, vol. 37(3), pages 219-242, June.
    9. 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.
    10. Fuss, Melvyn & McFadden, Daniel & Mundlak, Yair, 1978. "A Survey of Functional Forms in the Economic Analysis of Production," Histoy of Economic Thought Chapters, in: Fuss, Melvyn & McFadden, Daniel (ed.),Production Economics: A Dual Approach to Theory and Applications, volume 1, chapter 4, McMaster University Archive for the History of Economic Thought.
    11. Kristof De Witte & Rui Marques, 2010. "Designing performance incentives, an international benchmark study in the water sector," Central European Journal of Operations Research, Springer;Slovak Society for Operations Research;Hungarian Operational Research Society;Czech Society for Operations Research;Österr. Gesellschaft für Operations Research (ÖGOR);Slovenian Society Informatika - Section for Operational Research;Croatian Operational Research Society, vol. 18(2), pages 189-220, June.
    12. Walter, Matthias & Cullmann, Astrid & von Hirschhausen, Christian & Wand, Robert & Zschille, Michael, 2009. "Quo vadis efficiency analysis of water distribution? A comparative literature review," Utilities Policy, Elsevier, vol. 17(3-4), pages 225-232, September.
    13. Picazo-Tadeo, Andres J. & Saez-Fernandez, Francisco J. & Gonzalez-Gomez, Francisco, 2008. "Does service quality matter in measuring the performance of water utilities," Utilities Policy, Elsevier, vol. 16(1), pages 30-38, March.
    14. Chen Lin & Sanford Berg, 2008. "Incorporating Service Quality into Yardstick Regulation: An Application to the Peru Water Sector," Review of Industrial Organization, Springer;The Industrial Organization Society, vol. 32(1), pages 53-75, February.
    15. Meeusen, Wim & van den Broeck, Julien, 1977. "Efficiency Estimation from Cobb-Douglas Production Functions with Composed Error," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 18(2), pages 435-444, June.
    16. Bottasso, Anna & Conti, Maurizio, 2003. "Cost Inefficiency in the English and Welsh Water Industry: An Heteroskedastic Stochastic Cost Frontier Approach," Economics Discussion Papers 8872, University of Essex, Department of Economics.
    17. Steven Renzetti & Diane P. Dupont, 2009. "Measuring the Technical Efficiency of Municipal Water Suppliers: The Role of Environmental Factors," Land Economics, University of Wisconsin Press, vol. 85(4), pages 627-636.
    18. Wales, Terence J., 1977. "On the flexibility of flexible functional forms : An empirical approach," Journal of Econometrics, Elsevier, vol. 5(2), pages 183-193, March.
    19. Perelman, Sergio & Santín, Daniel, 2009. "How to generate regularly behaved production data? A Monte Carlo experimentation on DEA scale efficiency measurement," European Journal of Operational Research, Elsevier, vol. 199(1), pages 303-310, November.
    20. O'Donnell, Christopher J. & Coelli, Timothy J., 2005. "A Bayesian approach to imposing curvature on distance functions," Journal of Econometrics, Elsevier, vol. 126(2), pages 493-523, June.
    21. Bert Balk, 2001. "Scale Efficiency and Productivity Change," Journal of Productivity Analysis, Springer, vol. 15(3), pages 159-183, May.
    22. Massimo Filippini & Nevenka Hrovatin & Jelena Zorić, 2008. "Cost efficiency of Slovenian water distribution utilities: an application of stochastic frontier methods," Journal of Productivity Analysis, Springer, vol. 29(2), pages 169-182, April.
    23. Michael Zschille & Matthias Walter, 2012. "The performance of German water utilities: a (semi)-parametric analysis," Applied Economics, Taylor & Francis Journals, vol. 44(29), pages 3749-3764, October.
    24. Bert M. Balk, 2011. "Measuring And Decomposing Capital Input Cost," Review of Income and Wealth, International Association for Research in Income and Wealth, vol. 57(3), pages 490-512, September.
    25. 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.
    26. Kodde, David A & Palm, Franz C, 1986. "Wald Criteria for Jointly Testing Equality and Inequality Restriction s," Econometrica, Econometric Society, vol. 54(5), pages 1243-1248, September.
    27. Colin Kirkpatrick & David Parker & Yin-Fang Zhang, 2006. "An Empirical Analysis of State and Private-Sector Provision of Water Services in Africa," The World Bank Economic Review, World Bank, vol. 20(1), pages 143-163.
    28. Hendrik Wolff & Thomas Heckelei & Ron Mittelhammer, 2010. "Imposing Curvature and Monotonicity on Flexible Functional Forms: An Efficient Regional Approach," Computational Economics, Springer;Society for Computational Economics, vol. 36(4), pages 309-339, December.
    29. Lin, Chen, 2005. "Service quality and prospects for benchmarking: Evidence from the Peru water sector," Utilities Policy, Elsevier, vol. 13(3), pages 230-239, September.
    30. 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.
    31. Battese, G E & Coelli, T J, 1995. "A Model for Technical Inefficiency Effects in a Stochastic Frontier Production Function for Panel Data," Empirical Economics, Springer, vol. 20(2), pages 325-332.
    32. G.E. Battese & G.A. Tessema, 1993. "Estimation of stochastic frontier production functions with time‐varying parameters and technical efficiencies using panel data from Indian villages," Agricultural Economics, International Association of Agricultural Economists, vol. 9(4), pages 313-333, December.
    33. Supawat Rungsuriyawiboon & Tim Coelli, 2004. "Regulatory Reform and Economic Performance in US Electricity Generation," CEPA Working Papers Series WP062004, School of Economics, University of Queensland, Australia.
    34. Yu, Chunyan, 1998. "The effects of exogenous variables in efficiency measurement--A monte carlo study," European Journal of Operational Research, Elsevier, vol. 105(3), pages 569-580, March.
    35. Sherman, Roger, 1992. "Capital Waste in the Rate-of-Return Regulated Firm," Journal of Regulatory Economics, Springer, vol. 4(2), pages 197-204, June.
    36. Andres Picazo-Tadeo & Francisco Saez-Fernandez & Francisco Gonzalez-Gomez, 2009. "The role of environmental factors in water utilities' technical efficiency. Empirical evidence from Spanish companies," Applied Economics, Taylor & Francis Journals, vol. 41(5), pages 615-628.
    37. Greene, William H., 1980. "On the estimation of a flexible frontier production model," Journal of Econometrics, Elsevier, vol. 13(1), pages 101-115, May.
    38. Abbott, Malcolm & Cohen, Bruce, 2009. "Productivity and efficiency in the water industry," Utilities Policy, Elsevier, vol. 17(3-4), pages 233-244, September.
    39. Luis Orea, 2002. "Parametric Decomposition of a Generalized Malmquist Productivity Index," Journal of Productivity Analysis, Springer, vol. 18(1), pages 5-22, July.
    40. Mande Buafua, Patrick, 2015. "Efficiency of urban water supply in Sub-Saharan Africa: Do organization and regulation matter?," Utilities Policy, Elsevier, vol. 37(C), pages 13-22.
    41. Tupper, Henrique Cesar & Resende, Marcelo, 2004. "Efficiency and regulatory issues in the Brazilian water and sewage sector: an empirical study," Utilities Policy, Elsevier, vol. 12(1), pages 29-40, March.
    42. Forsund, Finn R. & Lovell, C. A. Knox & Schmidt, Peter, 1980. "A survey of frontier production functions and of their relationship to efficiency measurement," Journal of Econometrics, Elsevier, vol. 13(1), pages 5-25, May.
    43. Ford, J L & Warford, J J, 1969. "Cost Functions for the Water Industry," Journal of Industrial Economics, Wiley Blackwell, vol. 18(1), pages 53-63, November.
    44. Feigenbaum, Susan & Teeples, Ronald, 1983. "Public versus Private Water Delivery: A Hedonic Cost Approach," The Review of Economics and Statistics, MIT Press, vol. 65(4), pages 672-678, November.
    45. COELLI, Tim, 2000. "On the econometric estimation of the distance function representation of a production technology," LIDAM Discussion Papers CORE 2000042, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
    46. Subhash Ray, 2003. "Measuring Scale Efficiency from the Translog Multi-Input, Multi-Output Distance Function," Working papers 2003-25, University of Connecticut, Department of Economics.
    47. Paul, Catherine J. Morrison & Nehring, Richard, 2005. "Product diversification, production systems, and economic performance in U.S. agricultural production," Journal of Econometrics, Elsevier, vol. 126(2), pages 525-548, June.
    48. Tim Coelli & Denis Lawrence (ed.), 2006. "Performance Measurement and Regulation of Network Utilities," Books, Edward Elgar Publishing, number 3801.
    49. Battese, G. E. & Tessema, G. A., 1993. "Estimation of stochastic frontier production functions with time-varying parameters and technical efficiencies using panel data from Indian villages," Agricultural Economics, Blackwell, vol. 9(4), pages 313-333, December.
    50. Meryem Duygun & Silvia Pazzi & Emili Tortosa-Ausina & Simona Zambelli, 2014. "Does local public ownership matter for the efficiency of water utilities? Evidence from Italy," Working Papers 2014/21, Economics Department, Universitat Jaume I, Castellón (Spain).
    51. Aigner, Dennis & Lovell, C. A. Knox & Schmidt, Peter, 1977. "Formulation and estimation of stochastic frontier production function models," Journal of Econometrics, Elsevier, vol. 6(1), pages 21-37, July.
    52. Conti, Maurizio, 2005. "Ownership Relative Efficiency in the Water Industry: A Survey of the International Empirical Evidence," Economia Internazionale / International Economics, Camera di Commercio Industria Artigianato Agricoltura di Genova, vol. 58(3), pages 273-306.
    53. Mugisha, Silver, 2007. "Effects of incentive applications on technical efficiencies: Empirical evidence from Ugandan water utilities," Utilities Policy, Elsevier, vol. 15(4), pages 225-233, December.
    54. da Cruz, Nuno Ferreira & Marques, Rui Cunha, 2014. "Revisiting the determinants of local government performance," Omega, Elsevier, vol. 44(C), pages 91-103.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Molinos-Senante, María & Villegas, Andres & Maziotis, Alexandros, 2019. "Are water tariffs sufficient incentives to reduce water leakages? An empirical approach for Chile," Utilities Policy, Elsevier, vol. 61(C).
    2. Nyathikala, Sai Amulya & Jamasb, Tooraj & Llorca, Manuel & Kulshrestha, Mukul, 2023. "Utility governance, incentives, and performance: Evidence from India's urban water sector," Utilities Policy, Elsevier, vol. 82(C).
    3. María Molinos-Senante & Alexandros Maziotis, 2019. "Cost Efficiency of English and Welsh Water Companies: a Meta-Stochastic Frontier Analysis," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 33(9), pages 3041-3055, July.
    4. Favre, Marine & Montginoul, Marielle, 2018. "Water pricing in Tunisia: Can an original rate structure achieve multiple objectives?," Utilities Policy, Elsevier, vol. 55(C), pages 209-223.
    5. María Molinos-Senante & Simon Porcher & Alexandros Maziotis, 2018. "Productivity change and its drivers for the Chilean water companies: A comparison of full private and concessionary companies," Post-Print hal-02145824, HAL.
    6. Guerrini, Andrea & Molinos-Senante, María & Romano, Giulia, 2018. "Italian regulatory reform and water utility performance: An impact analysis," Utilities Policy, Elsevier, vol. 52(C), pages 95-102.
    7. María Molinos-Senante & Simon Porcher & Alexandros Maziotis, 2017. "Impact of regulation on English and Welsh water-only companies: an input-distance function approach," Post-Print hal-02146495, HAL.
    8. Felicetta Iovino, 2020. "The Financial Sustainability of Water Companies: the Italian Case," Journal of International Business Research and Marketing, Inovatus Services Ltd., vol. 5(6), pages 7-12, September.
    9. Goh, Kim Huat & See, Kok Fong, 2023. "Incorporating nonrevenue water in the efficiency assessment of water supply utilities: A parametric enhanced hyperbolic distance function," Utilities Policy, Elsevier, vol. 81(C).
    10. María Molinos-Senante & Ramon Sala-Garrido, 2017. "Decomposition of Productivity Growth of Water and Sewerage Companies: An Empirical Approach for Chile," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 31(13), pages 4309-4321, October.
    11. Ben Amor, Tawfik & Mellah, Thuraya, 2023. "Cost efficiency of Tunisian water utility districts: Does heterogeneity matter?," Utilities Policy, Elsevier, vol. 84(C).
    12. Maria Molinos-Senante & Alexandros Maziotis, 2021. "Productivity growth, economies of scale and scope in the water and sewerage industry: The Chilean case," PLOS ONE, Public Library of Science, vol. 16(5), pages 1-16, May.
    13. Carvalho, Anne Emília Costa & Sampaio, Raquel Menezes Bezerra & Sampaio, Luciano Menezes Bezerra, 2023. "The impact of regulation on the Brazilian water and sewerage companies’ efficiency," Socio-Economic Planning Sciences, Elsevier, vol. 87(PA).
    14. Alexandros Maziotis & Ramon Sala-Garrido & Manuel Mocholi-Arce & Maria Molinos-Senante, 2021. "Changes to The Productivity of Water Companies: Comparison of Fully Private and Concessionary Water Companies," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 35(10), pages 3355-3371, August.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Walter, Matthias & Cullmann, Astrid & von Hirschhausen, Christian & Wand, Robert & Zschille, Michael, 2009. "Quo vadis efficiency analysis of water distribution? A comparative literature review," Utilities Policy, Elsevier, vol. 17(3-4), pages 225-232, September.
    2. Alexandr Akimov & Paul Simshauser, 2018. "Performance measurement in Australian water utilities: Current state and future directions," Discussion Papers in Finance finance:201802, Griffith University, Department of Accounting, Finance and Economics.
    3. Jinjin Zhao, 2020. "Productivity change in the privatized water sector in China (1999–2006)," Journal of Productivity Analysis, Springer, vol. 53(2), pages 227-241, April.
    4. Anne-Kathrin Faust & Andrea Baranzini, 2014. "The economic performance of Swiss drinking water utilities," Journal of Productivity Analysis, Springer, vol. 41(3), pages 383-397, June.
    5. Andrea Guerrini & Giulia Romano & Bettina Campedelli, 2013. "Economies of Scale, Scope, and Density in the Italian Water Sector: A Two-Stage Data Envelopment Analysis Approach," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 27(13), pages 4559-4578, October.
    6. Guerrini, Andrea & Romano, Giulia & Leardini, Chiara, 2018. "Economies of scale and density in the Italian water industry: A stochastic frontier approach," Utilities Policy, Elsevier, vol. 52(C), pages 103-111.
    7. Mande Buafua, Patrick, 2015. "Efficiency of urban water supply in Sub-Saharan Africa: Do organization and regulation matter?," Utilities Policy, Elsevier, vol. 37(C), pages 13-22.
    8. Ferro, Gustavo & Lentini, Emilio J. & Mercadier, Augusto C. & Romero, Carlos A., 2013. "Eficiencia en la prestación de agua y saneamiento y su vinculación con regiones, propiedad e independencia de los prestadores en Brasil [Efficiency in water and sanitation providers and its links w," MPRA Paper 48247, University Library of Munich, Germany.
    9. Michael Zschille, 2012. "Consolidating the Water Industry: An Analysis of the Potential Gains from Horizontal Integration in a Conditional Efficiency Framework," Discussion Papers of DIW Berlin 1187, DIW Berlin, German Institute for Economic Research.
    10. Picazo-Tadeo, Andrés J. & Sáez-Fernández, Francisco J. & González-Gómez, Francisco, 2008. "Assesing Performance in the Management of the Urban Water Cycle," Efficiency Series Papers 2008/01, University of Oviedo, Department of Economics, Oviedo Efficiency Group (OEG).
    11. Ben Amor, Tawfik & Mellah, Thuraya, 2023. "Cost efficiency of Tunisian water utility districts: Does heterogeneity matter?," Utilities Policy, Elsevier, vol. 84(C).
    12. Michael Zschille, 2015. "Consolidating the water industry: an analysis of the potential gains from horizontal integration in a conditional efficiency framework," Journal of Productivity Analysis, Springer, vol. 44(1), pages 97-114, August.
    13. Michael Zschille, 2014. "Nonparametric measures of returns to scale: an application to German water supply," Empirical Economics, Springer, vol. 47(3), pages 1029-1053, November.
    14. Zschille, Michael, 2012. "Consolidating the Water Industry: An Analysis of the Potential Gains from Horizontal Integration in a Conditional Efficiency Fr," CEPR Discussion Papers 8737, C.E.P.R. Discussion Papers.
    15. Romano, Giulia & Guerrini, Andrea, 2011. "Measuring and comparing the efficiency of water utility companies: A data envelopment analysis approach," Utilities Policy, Elsevier, vol. 19(3), pages 202-209.
    16. Madau, Fabio A., 2012. "Technical and scale efficiency in the Italian Citrus Farming: A comparison between Stochastic Frontier Analysis (SFA) and Data Envelopment Analysis(DEA) Models," MPRA Paper 41403, University Library of Munich, Germany.
    17. Danelon, André F. & Spolador, Humberto F.S. & Kumbhakar, Subal C., 2021. "Weather and population size effects on water and sewer treatment costs: Evidence from Brazil," Journal of Development Economics, Elsevier, vol. 153(C).
    18. Ferro, Gustavo & Romero, Carlos A. & Covelli, María Paula, 2011. "Regulation and performance: A production frontier estimate for the Latin American water and sanitation sector," Utilities Policy, Elsevier, vol. 19(4), pages 211-217.
    19. Hoffjan, Andreas & Lechtenberg, Christian & Schuchardt, Lukas D., 2011. "Methoden zur Effizienzmessung in der deutschen Wasserversorgung – Eine Auswertung internationaler Studien," ZögU - Zeitschrift für öffentliche und gemeinwirtschaftliche Unternehmen, Nomos Verlagsgesellschaft mbH & Co. KG, vol. 34(3), pages 325-345.
    20. Francisco González-Gómez & Miguel García‐Rubio & Francisco Alcalá-Olid & M. Ortega-Díaz, 2013. "Outsourcing and Efficiency in the Management of Rural Water Services," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 27(3), pages 731-747, February.

    More about this item

    Keywords

    Efficiency; Tunisian Water Utility; Productivity growth;
    All these keywords.

    JEL classification:

    • C16 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods and Methodology: General - - - Econometric and Statistical Methods; Specific Distributions
    • C23 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Models with Panel Data; Spatio-temporal Models
    • D24 - Microeconomics - - Production and Organizations - - - Production; Cost; Capital; Capital, Total Factor, and Multifactor Productivity; Capacity
    • L95 - Industrial Organization - - Industry Studies: Transportation and Utilities - - - Gas Utilities; Pipelines; Water Utilities

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:juipol:v:38:y:2016:i:c:p:18-32. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: https://www.sciencedirect.com/journal/utilities-policy .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.