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The impact of the German feed-in tariff scheme on innovation: Evidence based on patent filings in renewable energy technologies

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  • Böhringer, Christoph
  • Cuntz, Alexander
  • Harhoff, Dietmar
  • Asane-Otoo, Emmanuel

Abstract

Over the last two decades, feed-in tariffs have pushed the massive expansion of electricity from renewable energy sources in Germany. Between 1991 and 1999, feed-in tariffs were prescribed through the Electricity Feed-in Law – the so-called Stromeinspeisungsgesetz (SEG) – at relatively moderate rates. From 2000 onwards, the SEG was replaced by the Renewable Energy Sources Act – the so-called Erneuerbare-Energien-Gesetz (EEG) – with much higher subsidy rates. The rise in subsidies to renewable power generation under the EEG came along with a substantial increase in electricity prices provoking an intense public debate on the benefits of renewable energy promotion. In our regression analysis, we assess one popular justification for feed-in tariffs: the demand-side effect of induced innovation. We find that the innovation impact of the German feed-in tariff scheme over the last two decades supports the positive innovation hypothesis. However, the inducement effect of the feed-in tariff scheme under the EEG is not significantly different from that of the SEG. Given the drastic cost of the EEG, we caution against the appraisal of the EEG feed-in tariff scheme solely on the grounds of its impact on technological innovation.

Suggested Citation

  • Böhringer, Christoph & Cuntz, Alexander & Harhoff, Dietmar & Asane-Otoo, Emmanuel, 2017. "The impact of the German feed-in tariff scheme on innovation: Evidence based on patent filings in renewable energy technologies," Energy Economics, Elsevier, vol. 67(C), pages 545-553.
    • Handle: RePEc:eee:eneeco:v:67:y:2017:i:c:p:545-553
    DOI: 10.1016/j.eneco.2017.09.001
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    References listed on IDEAS

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    More about this item

    Keywords

    Renewable energy promotion; Feed-in tariffs; Innovation;
    All these keywords.

    JEL classification:

    • C23 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Models with Panel Data; Spatio-temporal Models
    • H23 - Public Economics - - Taxation, Subsidies, and Revenue - - - Externalities; Redistributive Effects; Environmental Taxes and Subsidies
    • O38 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Government Policy

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