Environmental R&D and privatization in a mixed duopoly market

The study examines strategic environmental research and development (ER&D) under environmental tax in a mixed duopoly and further analyzes the impact of privatization on it. We show that the environmental tax may not necessarily promote the private (or public) firm's ER&D, and the relative ER&D performance between firms depends on the public firm's environmental attitudes and the tax rate. When the public firm cares much for environment, it can be used as an instrument to correct the private firm's underinvestment (or overinvestment) in ER&D. Moreover, privatization can (cannot) raise both firms' ER&D simultaneously if the tax rate is high (low).