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

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

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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Bibliographic Info

Paper provided by DIW Berlin, German Institute for Economic Research in its series Discussion Papers of DIW Berlin with number 993.

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Length: 28 , XI p.
Date of creation: 2010
Date of revision:
Handle: RePEc:diw:diwwpp:dp993

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Keywords: Technological change; renewable energy; patents; knowledge spillover; climate change; innovation;

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References

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  1. Matthieu Glachant & Antoine Dechezleprêtre & Yann Ménière, 2010. "What Drives the International Transfer of Climate Change Mitigation Technologies? Empirical Evidence from Patent Data," Working Papers 2010.12, Fondazione Eni Enrico Mattei.
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Citations

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Cited by:
  1. 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.
  2. 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.
  3. 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.
  4. 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.
  5. 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.
  6. Nemet, Gregory F., 2012. "Inter-technology knowledge spillovers for energy technologies," Energy Economics, Elsevier, vol. 34(5), pages 1259-1270.

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