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Responsive Adjustment of Feed-in Tariffs to Dynamic PV Technology Development

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  • Thilo Grau

Abstract

This paper reviews the adjustments of the feed-in tariff for new solar photovoltaics (PV) installations in Germany. As PV system prices declined rapidly over the last years, the German government implemented automatic mechanisms to adjust the support level for new installations in response to deployment volumes. This paper develops an analytic model to simulate weekly installations of PV systems ?30 kW (35% market share in 2010) based on project profitability and duration. The model accurately replicates observed market developments, showing the need for (i) more frequent tariff reductions (ii) and an appropriate choice of adjustment response parameters. The model can be used to test for appropriate parameter choices, and to compare different policy designs. To illustrate this, the competing proposals that had been discussed in 2011 are simulated. A robust choice must perform well against multiple scenarios for future PV system prices. The analysis shows that adjustment schemes with more frequent tariff reductions would have reached deployment targets in 2011 more effectively.

Suggested Citation

  • Thilo Grau, 2012. "Responsive Adjustment of Feed-in Tariffs to Dynamic PV Technology Development," Discussion Papers of DIW Berlin 1189, DIW Berlin, German Institute for Economic Research.
    • Handle: RePEc:diw:diwwpp:dp1189
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    File URL: https://www.diw.de/documents/publikationen/73/diw_01.c.392871.de/dp1189.pdf
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    Cited by:

    1. Thilo Grau, 2014. "Comparison of Feed-in Tariffs and Tenders to Remunerate Solar Power Generation," Discussion Papers of DIW Berlin 1363, DIW Berlin, German Institute for Economic Research.
    2. López Prol, Javier, 2018. "Regulation, profitability and diffusion of photovoltaic grid-connected systems: A comparative analysis of Germany and Spain," Renewable and Sustainable Energy Reviews, Elsevier, vol. 91(C), pages 1170-1181.

    More about this item

    Keywords

    feed-in tariff; photovoltaic; renewable deployment;
    All these keywords.

    JEL classification:

    • O30 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - General
    • O31 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Innovation and Invention: Processes and Incentives
    • Q42 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - Alternative Energy Sources
    • Q48 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - Government Policy

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