Electricity Pricing and Market Power - Evidence from Germany
The aim of this paper is to develop a methodology for measuring the exercise of potential market power in liberalized electricity markets. We therefore investigate producer behavior in the context of electricity pricing with respect to fundamental time-dependent marginal cost (TMC), i.e. CO2- and fuel cost. In doing so, we do not - in contrast to most current approaches to market power investigation - rely on an estimate of the entire generation cost, which inevitably suffers from the lack of appropriate available data. Applying an analytical model of a day-ahead electricity market, we derive work-on rates, which provide information about the impact of TMC variations on electricity prices in the market constellations of perfect competition, quasi-monopoly and monopoly. Comparing these model-based work-on rates with actual work-on rates, estimated by an adjusted first-differences regression model of German power prices on the cost for hard coal, natural gas and emission allowances, we find evidence of the exercise of market power in the period 2006 to 2008. However, our results reveal that German market competitiveness increases marginally. We confirm our results by simulating a TMC-driven diffusion model of futures power prices estimated by maximum-likelihood.
|Date of creation:|
|Contact details of provider:|| Postal: Am Stadtgraben 9, 48143 Münster|
Phone: (02 51) 83-2 29 71
Fax: (02 51) 83-2 29 70
Web page: http://www.wiwi.uni-muenster.de/insiwo
More information through EDIRC
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Willems, Bert & Rumiantseva, I. & Weigt, H., 2007.
"Cournot versus Supply Functions : What Does the Data tell us?,"
2007-023, Tilburg University, Tilburg Law and Economic Center.
- Willems, Bert & Rumiantseva, Ina & Weigt, Hannes, 2009. "Cournot versus Supply Functions: What does the data tell us?," Energy Economics, Elsevier, vol. 31(1), pages 38-47, January.
- Bert WILLEMS & Ina RUMIANTSEVA & Hannes WEIGT, 2007. "Cournot versus supply functions: what does the data tell us?," Working Papers Department of Economics ces0720, KU Leuven, Faculty of Economics and Business, Department of Economics.
- Willems, Bert & Rumiantseva, I. & Weigt, H., 2007. "Cournot Versus Supply Functions : What does the Data Tell us?," Discussion Paper 2007-63, Tilburg University, Center for Economic Research.
- Borenstein, Severin & Bushnell, James & Knittel, Chris, 1999.
"Market Power in Electricity Markets: Beyond Concentration Measures,"
Staff General Research Papers Archive
31548, Iowa State University, Department of Economics.
- Severin Borenstein & James Bushnell & Christopher R. Knittel, 1999. "Market Power in Electricity Markets: Beyond Concentration Measures," The Energy Journal, International Association for Energy Economics, vol. 0(Number 4), pages 65-88.
- Green, Richard & Newbery, David M G, 1991.
"Competition in the British Electricity Spot Market,"
CEPR Discussion Papers
557, C.E.P.R. Discussion Papers.
- Green, Richard J & Newbery, David M, 1992. "Competition in the British Electricity Spot Market," Journal of Political Economy, University of Chicago Press, vol. 100(5), pages 929-953, October.
- Holmberg, Pär, 2004.
"Unique Supply Function Equilibrium with Capacity Constraints,"
Working Paper Series
2004:20, Uppsala University, Department of Economics.
- Holmberg, Par, 2008. "Unique supply function equilibrium with capacity constraints," Energy Economics, Elsevier, vol. 30(1), pages 148-172, January.
- Jos Sijm & Karsten Neuhoff & Yihsu Chen, 2006.
"CO 2 cost pass-through and windfall profits in the power sector,"
Taylor & Francis Journals, vol. 6(1), pages 49-72, January.
- Sijm, J. & Neuhoff, K. & Chen, Y., 2006. "CO2 cost pass through and windfall profits in the power sector," Cambridge Working Papers in Economics 0639, Faculty of Economics, University of Cambridge.
- Severin Borenstein & James Bushnell, 1998.
"An Empirical Analysis of the Potential for Market Power in California's Electricity Industry,"
NBER Working Papers
6463, National Bureau of Economic Research, Inc.
- Borenstein, Severin & Bushnell, James, 1999. "An Empirical Analysis of the Potential for Market Power in California's Electricity Industry," Journal of Industrial Economics, Wiley Blackwell, vol. 47(3), pages 285-323, September.
- Severin Borenstein & James B. Bushnell & Frank A. Wolak, 2002. "Measuring Market Inefficiencies in California's Restructured Wholesale Electricity Market," American Economic Review, American Economic Association, vol. 92(5), pages 1376-1405, December.
- Catherine D. Wolfram, 1999. "Measuring Duopoly Power in the British Electricity Spot Market," American Economic Review, American Economic Association, vol. 89(4), pages 805-826, September.
- Klemperer, Paul D & Meyer, Margaret A, 1989. "Supply Function Equilibria in Oligopoly under Uncertainty," Econometrica, Econometric Society, vol. 57(6), pages 1243-1277, November.
- Ciarreta, Aitor & Gutierrez-Hita, Carlos, 2006. "Supply function vs. quantity competition in supergames," International Journal of Industrial Organization, Elsevier, vol. 24(4), pages 773-783, July.
- Bolle, Friedel, 1992. "Supply function equilibria and the danger of tacit collusion : The case of spot markets for electricity," Energy Economics, Elsevier, vol. 14(2), pages 94-102, April.
- Bonacina, Monica & Gulli`, Francesco, 2007. "Electricity pricing under "carbon emissions trading": A dominant firm with competitive fringe model," Energy Policy, Elsevier, vol. 35(8), pages 4200-4220, August.
- Richard Schmalensee & Bennett W. Golub, 1984. "Estimating Effective Concentration in Deregulated Wholesale Electricity Markets," RAND Journal of Economics, The RAND Corporation, vol. 15(1), pages 12-26, Spring.
- Lise, Wietze & Linderhof, Vincent & Kuik, Onno & Kemfert, Claudia & Ostling, Robert & Heinzow, Thomas, 2006. "A game theoretic model of the Northwestern European electricity market--market power and the environment," Energy Policy, Elsevier, vol. 34(15), pages 2123-2136, October.
- Benth, Fred Espen & Koekebakker, Steen, 2008. "Stochastic modeling of financial electricity contracts," Energy Economics, Elsevier, vol. 30(3), pages 1116-1157, May.
When requesting a correction, please mention this item's handle: RePEc:muc:wpaper:200121. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Norbert Hiller)
If references are entirely missing, you can add them using this form.