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.
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- 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.
- Willems, Bert & Rumiantseva, I. & Weigt, H., 2007.
"Cournot Versus Supply Functions : What does the Data Tell us?,"
2007-63, Tilburg University, Center for Economic Research.
- 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.
- Willems, Bert & Rumiantseva, I. & Weigt, H., 2007. "Cournot versus Supply Functions : What Does the Data tell us?," Discussion Paper 2007-023, Tilburg University, Tilburg Law and Economic Center.
- Bert WILLEMS & Ina RUMIANTSEVA & Hannes WEIGT, 2007. "Cournot versus supply functions: what does the data tell us?," Center for Economic Studies - Discussion papers ces0720, Katholieke Universiteit Leuven, Centrum voor Economische Studiën.
- Richard Green, 2004.
"Did English Generators Play Cournot? Capacity withholding in the Electricity Pool,"
0410, Massachusetts Institute of Technology, Center for Energy and Environmental Policy Research.
- Green, R., 2004. "‘Did English Generators Play Cournot? Capacity Withholding in the Electricity Pool’," Cambridge Working Papers in Economics 0425, Faculty of Economics, University of Cambridge.
- 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 929-53, October.
- Jean Tirole, 1988. "The Theory of Industrial Organization," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262200716, June.
- 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.
- 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.
- 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.
- 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.
- 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.
- Felix Müsgens, 2006. "QUANTIFYING MARKET POWER IN THE GERMAN WHOLESALE ELECTRICITY MARKET USING A DYNAMIC MULTI-REGIONAL DISPATCH MODEL -super-* ," Journal of Industrial Economics, Wiley Blackwell, vol. 54(4), pages 471-498, December.
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