FEEM working papers "Note di lavoro" series
2009 .014

The Role of R&D and Technology Diffusion in Climate Change Mitigation: New Perspectives Using the Witch Model


Autori: Valentina Bosetti, Carlo Carraro, Romain Duval, Alessandra Sgobbi, Massimo Tavoni
Serie: Climate Change and Sustainable Development
Editor: Carlo Carraro
Tipo: Journal
Parole chiave: Climate Policy,Energy R&D,Fund,Stabilisation Costs
Numero JEL: H0,H2,H3,H4,O3,Q32,Q43,Q54
JEL: Forthcoming in Energy Economics

Abstract

This paper uses the WITCH model, a computable general equilibrium model with endogenous technological change, to explore the impact of various climate policies on energy technology choices and the costs of stabilising greenhouse gas concentrations. Current and future expected carbon prices appear to have powerful effects on R&D spending and clean technology diffusion. Their impact on stabilisation costs depends on the nature of R&D: R&D targeted at incremental energy efficiency improvements has only limited effects, but R&D focused on the emergence of major new low-carbon technologies could lower costs drastically if successful - especially in the non-electricity sector, where such low-carbon options are scarce today. With emissions coming from multiple sources, keeping a wide range of options available matters for stabilisation costs more than improving specific technologies. Due to international knowledge spillovers, stabilisation costs could be further reduced through a complementary, global R&D policy. However, a strong price signal is always required.

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