Limit Pricing, Climate Policies, and Imperfect Substitution
The effects of climate policies are often studied under the assumption of perfectly competitive markets for fossil fuels. In this paper, we allow for monopolistic fossil fuel supply. We show that, if fossil and renewable energy sources are perfect substitutes, a phase will exist during which the monopolist chooses a limit pricing strategy. If limit pricing occurs from the beginning, a renewables subsidy increases initial extraction, whereas a carbon tax leaves initial extraction unaffected. However, if the initially fossil fuels are cheaper than renewables, a renewables subsidy and a carbon tax lower initial extraction, contrary to the case under perfect competition. Both policy instruments lower cumulative extraction. If fossil fuels and renewables are imperfect but good substitutes, the monopolist will exhibit `limit pricing resembling' behavior, by keeping the effective price of fossil close to that of renewables for considerable time. The empirical question whether energy demand is elastic or inelastic has less drastic implications for the fossil price and extraction paths than under perfect substitutability.
|Date of creation:||21 Oct 2016|
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- Andrade de Sá, Saraly & Daubanes, Julien, 2016.
"Limit pricing and the (in)effectiveness of the carbon tax,"
Journal of Public Economics,
Elsevier, vol. 139(C), pages 28-39.
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