 The optimal time path of clean energy R&D policy when patents have finite lifetimeReyer Gerlagh, Snorre Kverndokk and Knut Einar Rosendahl Journal of Environmental Economics and Management, 2014, vol. 67, issue 1, 2-19 Abstract: We study the optimal time path for clean energy innovation policy. In a model with emission reduction through clean energy deployment, and with R&D increasing the overall productivity of clean energy, we describe optimal R&D policies jointly with emission pricing policies. We find that while emission prices can be set at the Pigouvian level independently of innovation policy, the optimal level of R&D subsidies and patent lifetime change with the stages of the climate problem. In the early stages of clean energy development, innovators find it more difficult to capture the social value of their innovations. Thus, for a given finite patent lifetime, optimal clean energy R&D subsidies are initially high, but then fall over time. Alternatively, if research subsidies are kept constant, the optimal patent lifetime should initially be long and fall over time. Keywords: Dynamic climate policy; Dynamic innovation subsidies; Research and development; Patent lifetime (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:jeeman:v:67:y:2014:i:1:p:2-19 DOI: 10.1016/j.jeem.2013.09.005 Access Statistics for this article Journal of Environmental Economics and Management is currently edited by M.A. Cole, A. Lange, D.J. Phaneuf, D. Popp, M.J. Roberts, M.D. Smith, C. Timmins, Q. Weninger and A.J. Yates More articles in Journal of Environmental Economics and Management from Elsevier |
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