On general versus emission saving R&D support

We analyse welfare effects of supporting general versus emission saving technological development when carbon emissions are regulated by a carbon tax. We use a computable general equilibrium model with induced technological change (ITC). ITC is driven by two separate, economically motivated research and development (R&D) activities, one general and one emission saving specified as carbon capture and storage. We study public revenue neutral policy alternatives targeted towards general R&D and emission saving R&D. Support to general R&D is the welfare superior, independent of the level of international carbon price. However, the welfare gap between the two R&D policy alternatives is reduced if the carbon price increases.