Predicting market power in wholesale electricity markets
The traditional measure of market power is the HHI, which gives implausible results given the low elasticity of demand in electricity spot markets, unless it is adapted to take account of contracting. In its place the Residual Supply Index has been proposed as a more suitable index to measure potential market power in electricity markets, notably in California and more recently in the EU Sector Inquiry. The paper investigates its value in identifying the ability of firms to raise prices in an electricity market with contracts and capacity constraints and find that it is most useful for the case of a single dominant supplier, or with a natural extension, for the case of a symmetric oligoply. Estimates from the Sector Inquiry seem to fit this case better than might be expected, but suggests an alternative defintion of the RSI defined over flexible output that should give a more reliable relationship.
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- Giovanni Facchini & Anna Maria Mayda & Prachi Mishra, 2009.
"Do Interest Groups affect US Immigration Policy?,"
CReAM Discussion Paper Series
0904, Centre for Research and Analysis of Migration (CReAM), Department of Economics, University College London.
- Giovanni Facchini & Anna Maria Mayda & Prachi Mishra, 2008. "Do Interest Groups Affects US Immigration Policy?," Development Working Papers 256, Centro Studi Luca d\'Agliano, University of Milano.
- Facchini, Giovanni & Mayda, Anna Maria & Mishra, Prachi, 2008. "Do Interest Groups Affect US Immigration Policy?," CEPR Discussion Papers 6898, C.E.P.R. Discussion Papers.
- Prachi Mishra & Giovanni Facchini & Anna Maria Mayda, 2008. "Do Interest Groups Affect U.S. Immigration Policy?," IMF Working Papers 08/244, International Monetary Fund.
- Allaz Blaise & Vila Jean-Luc, 1993. "Cournot Competition, Forward Markets and Efficiency," Journal of Economic Theory, Elsevier, vol. 59(1), pages 1-16, February.
- Kreps, David M & Wilson, Robert, 1982.
Econometric Society, vol. 50(4), pages 863-94, July.
- Blume, Lawrence, 2002.
"Stigma and Social Control,"
119, Institute for Advanced Studies.
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