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1135. A STATIONARY EQUILIBRIUM MODEL OF GREEN TECHNOLOGY ADOPTION WITH ENDOGENOUS CARBON PRICE

Invited abstract in session TB-33: Optimal control in environmental economics, stream Optimal Control Theory and Applications.

Tuesday, 10:30-12:00
Room: 42 (building: 303A)

Authors (first author is the speaker)

1. Giorgio Ferrari
Center for Mathematical Economics, Bielefeld University

Abstract

We propose and analyze a stationary equilibrium model for a competitive industry which endogenously determines the carbon price necessary to achieve a given emission target. In the model, firms are identified by their level of technology and make production, entry, and abatement decisions. Polluting firms are subject to a carbon price and abatement is formulated as an irreversible investment, which entails a sunk cost and results into switching to a carbon neutral technology. In equilibrium, we identify a carbon price and a stationary distribution of incumbent, polluting firms, that guarantee the compliance with a certain emission target. Our general theoretical framework is complemented with a case study with Brownian technology shocks, in
which we discuss some implications of our model. We observe that a carbon pricing system alongside installation subsidies and tax benefits for green firms trigger earlier investment, while higher income taxes for polluting firms may be distorting. Moreover, we discuss the role of a welfare maximizing regulator, who, by optimally setting the emission target, may mitigate or revert some parameters' effects observed in the model with fixed limit. This is joint work with Felix Dammann.

Keywords

Status: accepted


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