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Interfuel Substitution within Industrial Companies: An Analysis Based on Panel Data at Company Level

Thomas Bue Bjorner and Henrik Holm Jensen

Year: 2002
Volume: Volume23
Number: Number 2
DOI: 10.5547/ISSN0195-6574-EJ-Vol23-No2-1
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Abstract:
In this paper we estimate two models for interfuel substitution between electricity, district heating and (other) fuels using a micro panel data set containing information for most Danish industrial companies in the period between 1983 and 1997. The main finding of the study is that interfuel substitution is low within the companies, especially between electricity and other fuels. The partial own-price elasticities estimated are small (between -0.04 and -0.13) both for electricity and other fuels, while it is between -0.44 and -0.50 for district heating. The partial own-price elasticity for electricity is smaller than generally found in macro studies. One explanation may be that the macro studies, in addition to technical substitution, capture some derived demand effect (i.e., aggregation bias).



Energy Price, Environmental Policy, and Technological Bias

Abbas A. Taheri and Rodney Stevenson

Year: 2002
Volume: Volume23
Number: Number 4
DOI: 10.5547/ISSN0195-6574-EJ-Vol23-No4-4
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Abstract:
This paper investigates input biasing characteristics of technology, environmental compliance, and changing energy prices. In particular we wish to investigate whether input biases of technology and environmental compliance are induced by changes in relative fuel prices, or whether there are price induced technology and environmental compliance biases. Using a two-stage optimization, we estimate a truncated third-order translog model by its associated (second order) cost share equations. The model uses two-digit SIC data panel for the period 1974-- 1991. We find evidence of significant fuel-saving technological bias, while environmental compliance has been significantly fossil fuel using. The results indicate that technology and environmental compliance biases are, in part, induced by changes in relative fuel prices and such induced biases are mainly fuel saving. Finally, our demand elasticity estimates indicate that industrial demand for most fossil fuels and purchased electricity is significantly price inelastic. Policy implications of these results are also briefly discussed.





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