Gas Distribution Benchmarking of Utilities from Slovenia, the Netherlands and the UK: an Application of Data Envelopment Analysis
This paper carries out non-parametric relative efficiency comparisons using an international sample of gas distribution utilities from two old and one new EU members, namely the Netherlands, the UK, and Slovenia. By conducting DEA on a cross-sectional sample of gas utilities, we discover that, on average, Slovenian utilities perform less efficiently than UK and Dutch utilities. To a large extent, this is due to the less extensive regulation of the Slovenian gas industry as seen in the past. The incentive-based price-cap regulation recently introduced in Slovenia could help close this efficiency gap over time. The authors also find out that different model specifications lead to very similar efficiency scores and rankings, implying that benchmarking can be employed as a useful complementary instrument for monitoring utility performance. In this way, the informational asymmetry between distribution utilities and regulatory authorities can be significantly mitigated. For the wider and more successful implementation of international benchmarking in the future, it is also important that coherent regional and international data is made available to regulators.
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Amendments to the Energy Act 2004. Official Gazette of the Republic of Slovenia 51/04 Ljubljana.
AERS (Energy Agency of the Republic of Slovenia) 2005a. Report on the Energy Sector for 2004. Maribor.
AERS 2005b. Regulations on the Methodology for Setting the Network Charge and Defining the Criteria for Establishing the Eligible Costs for Gas Distribution Network (Akt o določitvi metodologije za določitev omrežnine in kriterijev za ugotavljanje upravičenih stroškov za distribucijsko omrežjezemeljskega plina). Official Gazette of the Republic of Slovenia 87/2005 Ljubljana.
Banker R. D. Charnes A. Cooper W. W. 1984. Some models for estimating technical and scale inefficiencies in data envelopment analysis. Management Science 30(9): 1078-1092.
Bauer P. Berger A. Ferrier G. Humphrey D. 1998. Consistency Conditions for Regulatory Analysis of Financial Institutions: A Comparison of Frontier Efficiency Methods. Journal of Economics and Business 50: 85-114.
Charnes A. Cooper W. W. Rhodes E. 1978. Measuring the efficiency of decision-making units. European Journal of Operational Research 2: 429-444.
Coelli T. J. Rao P. D. S. Battese G. E. 1998. An Introduction to Efficiency and Productivity Analysis. Kluwer Academic Publishers.
Cooper W. W. Seinford M. L. Tone K. 2003. Data Envelopment Analysis. Kluwer Academic Publishers.
Debreu G. 1951. The Coefficient of Resource Utilisation. Econometrica 19: 225-234.
Directive 98/30/EC of the European Parliament and of the Council of 22 June 1998 Concerning Common Rules for the Internal Market in Natural Gas. OJ L 204/1.
Directive 2003/55/EC of the European Parliament and of the Council of 26 June 2003 Concerning Common Rules for the Internal Market in Natural Gas and Repealing Directive 98/30/EC. OJ L 176/57.
DTE (Dienst uitvoering en toezicht Energie) 2001. Price-cap regulering gasdistributiebedrijven 2002/2003 [Price-Cap Regulation Gas Distribution Companies 2002/2003]. Consultation document. The Hague.
Dyson R. G. Allen R. Camanho A. S. Podinovski V. V. Sarrico C. S. Shale E. A. 2001. Pitfalls and protocols in DEA. European Journal of Operational Research 132(2): 245-259.
Estache A. Rossi M. A. Ruzzier C. A. 2004. The Case of International Coordination of Electricity Regulation: Evidence from Measurement of Efficiency in South America. Journal of Regulatory Economics 25 (3): 271-295.
Energy Act 1999. Official Gazette of the Republic of Slovenia 79/99 Ljubljana.
Fare R. Grosskopf S. Lovell C. A. K. 1985. The Measurement of the Efficiency of Production. Boston (MA) Kluwer Academic Publishers.
Farrell M. J. 1957. The Measurement of Productive Efficiency. Journal of the Royal Statistical Society Series A 120: 253-281.
Farsi M. and Filippini M. 2004. Regulation and measuring cost efficiency with panel data models: application to electricity distribution utilities. The Review of Industrial Organization 25: 1-19.
Farsi M. Filippini M. and Greene W. 2005. Efficiency Measurement in Network Industries: Application to the Swiss Railway Companies. Journal of Regulatory Economics 28(1): 69-90.
Hattori T. 2002. Relative performance of U. S. and Japanese Electricity Distribution: An Application of Stochastic Frontier Analysis. Journal of Productivity Analysis 18 269-284.
Hattori T. Jamasb T. Pollitt M. 2002. A comparison of UK and Japanese electricity distribution performance 1985-1998: lessons for incentive regulation. DAE Working Paper 0212. Department of Applied Economics University of Cambridge.
Hrovatin N. and Švigelj M. 2004: Analysis of the natural gas price setting system for tariff customers in Slovenia. Economic and Business Review for Central and South-Eastern Europe 6(1): 69-87.
Hrovatin N. Zorić J. Scarsi G. C. Paripovič M. Senčar M. 2005. The relative performance of electricity distribution utilities from Slovenia the Netherlands and the UK: an application of Data Envelopment Analysis. Economic and Business Review for Central and South-Eastern Europe 7(4): 329-349.
IPART 1999. Efficiency Benchmarking Study of the NSW Distribution Business. Research Paper No. 13. Commissioned by the Independent Pricing and Regulatory Tribunal of New South Wales Sydney.
Jamasb T. and Pollitt M. 2001. Benchmarking and regulation: international electricity experience. Utilities Policy 9: 107-130.
Jamasb T. and Pollitt M. 2003. International benchmarking and regulation: an application to European electricity distribution utilities. Energy Policy 31(15): 1609-1622.
Joskow P. J. and Schmalensee R. 1986. Incentive regulation for electric utilities Yale Journal on Regulation 4: 1-49.
Koopmans T. C. 1951. An Analysis of Production as an Efficient Combination of Activities in: Koopmans T. C. (Ed.) Activity Analysis of Production and Allocation. Cowles Commission for Research in Economics Monograph 13. New York: Wiley.
Kumbhakar S. C. and Lovell C. A. K. 2000. Stochastic Frontier Analysis. Cambridge University Press.
National Grid Transco (NGT) 2005. Annual Report and Accounts 2004/05. Available at http://www.investis.com/ngt/ara_2005/ofr_ukgd.html
Neuberg L. G. 1977. Two Issues in the Municipal Ownership of Electric Power Distribution Systems. Bell Journal of Economics 8: 303-323.
Office of Gas and Electricity Markets (OFGEM) 2004. Domestic Competitive Market Review. Available at http://www.ofgem.gov.uk
Pardina M. R. and Rossi M. A. 2000. Technical change and catching-up: the electricity distribution sector in South America. CEER Departamento de Economia y Finanzas Universidad de la Empresa Buenos Aires.
Pollitt M. 1994. Productive efficiency in electricity transmission and distribution systems. Applied Economics Discussion Paper Series No. 161. Institute of Economics and Statistics University of Oxford.
Zhu J. 2003. Quantitative Models for Performance Evaluation and Benchmarking. Data Envelopment Analysis with Spreadsheets and DEA Excel Solver. Boston (MA) Kluwer Academic Publishers.