A Joint Estimation of Price-Cost Margins and Sunk Capital - Theory and Evidence from the European Electricity Industry
AbstractIn this paper, we propose a new methodology to jointly estimate market power and the importance of sunk capital extending the work of Hall (1988) and Roeger (1995). We then apply this new technique to the European electricity industry using firm level data for the period 1994-1999, and analyze the impact of the 1996 European directive to liberalize electricity markets. We find that the average price cost margin has declined from 0.29 in 1994 to 0.22 in 1999. Moreover, the magnitude of the decline is linked to firm size: the largest firms have experienced a larger percentage fall. The variable cost parameter has increased from 0.36 in 1994 to 0.56 in 1999. The main reason of the change is the switch of the relationship between real labor productivity and the share of variable capital. Our results therefore document a more competitive electricity market and a more flexible and more efficient use of capital.
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Bibliographic InfoPaper provided by University of Aarhus, Aarhus School of Business, Department of Economics in its series Working Papers with number 04-17.
Length: 26 pages
Date of creation: 10 Dec 2004
Date of revision:
Contact details of provider:
Postal: The Aarhus School of Business, Prismet, Silkeborgvej 2, DK 8000 Aarhus C, Denmark
Phone: +45 89 486396
Fax: +45 8615 5175
Web page: http://www.asb.dk/departments/nat.aspx
More information through EDIRC
market power; fixed capital; liberalization; electricity market;
Find related papers by JEL classification:
- D24 - Microeconomics - - Production and Organizations - - - Production; Cost; Capital; Capital, Total Factor, and Multifactor Productivity; Capacity
- D40 - Microeconomics - - Market Structure and Pricing - - - General
- L94 - Industrial Organization - - Industry Studies: Transportation and Utilities - - - Electric Utilities
This paper has been announced in the following NEP Reports:
- NEP-ALL-2004-12-20 (All new papers)
- NEP-COM-2004-12-20 (Industrial Competition)
- NEP-EEC-2004-12-20 (European Economics)
- NEP-EEC-2004-12-27 (European Economics)
- NEP-ENE-2004-12-20 (Energy Economics)
- NEP-MIC-2004-12-20 (Microeconomics)
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.:
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NBER Working Papers
1785, National Bureau of Economic Research, Inc.
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