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Innovative Activity in Wind and Solar Technology: Empirical Evidence on Knowledge Spillovers Using Patent Data

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  • Braun, Frauke G
  • Schmidt-Ehmcke, Jens
  • Zloczysti, Petra

Abstract

This paper studies technological change in renewable energies, providing empirical evidence on the determinants of innovative activity with a special emphasis on the role of knowledge spillovers. We investigate two major renewable energy technologies wind and solar across a panel of 21 OECD countries over the period 1978 to 2004. Spillovers may occur at the national level, either within the same technology field or economic sector (intra-sectoral spillovers) or in related technologies or sectors (inter-sectoral spillovers), or at the international level. We find that innovation is strongly driven by knowledge spillovers, especially those occurring at the national level. Wind and solar technologies exhibit distinct innovation characteristics: both are stimulated by intra-sectoral spillovers, but respond differently to inter-sectoral spillovers, which are only influential in the case of wind technology. We also find evidence that public R&D stimulates innovation, particularly in solar technologies.

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Paper provided by C.E.P.R. Discussion Papers in its series CEPR Discussion Papers with number 7865.

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Date of creation: Jun 2010
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Handle: RePEc:cpr:ceprdp:7865

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Keywords: Climate Change; Innovation; Knowledge Spillover; Patents; Renewable Energy; Technological Change;

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References

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Cited by:
  1. Nemet, Gregory F., 2012. "Inter-technology knowledge spillovers for energy technologies," Energy Economics, Elsevier, vol. 34(5), pages 1259-1270.
  2. Lehmann, Paul, 2013. "Supplementing an emissions tax by a feed-in tariff for renewable electricity to address learning spillovers," Energy Policy, Elsevier, vol. 61(C), pages 635-641.
  3. Joëlle Noailly & Victoria Shestalova, 2013. "Knowledge spillovers from renewable energy technologies, Lessons from patent citations," CPB Discussion Paper 262, CPB Netherlands Bureau for Economic Policy Analysis.
  4. Braun, Frauke G. & Hooper, Elizabeth & Wand, Robert & Zloczysti, Petra, 2011. "Holding a candle to innovation in concentrating solar power technologies: A study drawing on patent data," Energy Policy, Elsevier, vol. 39(5), pages 2441-2456, May.
  5. Edenhofer, Ottmar & Hirth, Lion & Knopf, Brigitte & Pahle, Michael & Schlömer, Steffen & Schmid, Eva & Ueckerdt, Falko, 2013. "On the economics of renewable energy sources," Energy Economics, Elsevier, vol. 40(S1), pages S12-S23.
  6. Corradini, Massimiliano & Costantini, Valeria & Mancinelli, Susanna & Mazzanti, Massimiliano, 2014. "Unveiling the dynamic relation between R&D and emission abatement," Ecological Economics, Elsevier, vol. 102(C), pages 48-59.

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