The B.E. Journal of Economic Analysis & Policy
Editor-in-Chief: Ludwig, Sandra / Schmitz, Hendrik
Ed. by Barigozzi, Francesca / Brunner, Johann / Fleck, Robert / Mastrobuoni, Giovanni / Mendola, Mariapia / Requate, Till / de Vries, Frans / Wenzel, Tobias
IMPACT FACTOR 2018: 0.520
5-year IMPACT FACTOR: 0.556
CiteScore 2018: 0.54
SCImago Journal Rank (SJR) 2018: 0.356
Source Normalized Impact per Paper (SNIP) 2018: 0.394
Carbon Taxes and Innovation without Commitment
Climate mitigation policy should be imposed over a long period, and spur innovation of new technologies in order to make stabilization of green house gas concentration economically feasible. The government may announce current and future policy packages that stimulate current R&D in climate-friendly technologies. However, once climate-friendly technologies have been developed, the government may have no incentive to implement the pre-announced future policies, that is, there may be a time inconsistency problem. We show that if the government can optimally subsidize R&D today, there is no time inconsistency problem. Thus, lack of commitment is not an argument for higher current R&D subsidies than the first-best subsidy. If the offered R&D subsidy is lower than the optimal subsidy, the current (sub-game perfect) carbon tax rate exceeds the first-best carbon tax rate.
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