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How high feed-in tariffs impacted the capital cost of solar PV in Japan

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  • Kimura, Keiji
  • Lundberg, Liv
  • Kåberger, Tomas

Abstract

This study investigates the impact of feed-in tariffs (FITs) on the capital expenditures (CAPEX) of solar photovoltaics (PV) projects in Japan. In 2012, Japan introduced a FIT scheme with the highest tariff levels in the world. Tariffs for a project were set at the time when the project obtained a qualification, but early projects had no deadline for starting operations, and many where not built until many years later. The installed capacity of solar PV in Japan surged under the scheme. However, Japan has suffered from high costs of solar PV compared to the global level. Using survey data from Japanese solar PV projects, and econometric modelling we leverage the fact that projects qualified at different points in time, with different FIT levels, have subsequently been built simultaneously. We find that higher FIT levels are correlated with increased CAPEX, where a 1 JPY/kWh increase in the FIT level is linked to a 3.31 JPY/W rise in CAPEX. This may be due to that developers with guaranteed high tariffs have weaker incentives to reduce costs and/or to strategic pricing by suppliers. Our findings indicate that poorly designed support schemes can counteract the policy goal of reducing renewable energy costs.

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  • Kimura, Keiji & Lundberg, Liv & Kåberger, Tomas, 2025. "How high feed-in tariffs impacted the capital cost of solar PV in Japan," Renewable Energy, Elsevier, vol. 244(C).
    • Handle: RePEc:eee:renene:v:244:y:2025:i:c:s0960148125003477
    DOI: 10.1016/j.renene.2025.122685
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    as
    1. Chen, Cliff & Wiser, Ryan & Mills, Andrew & Bolinger, Mark, 2009. "Weighing the costs and benefits of state renewables portfolio standards in the United States: A comparative analysis of state-level policy impact projections," Renewable and Sustainable Energy Reviews, Elsevier, vol. 13(3), pages 552-566, April.
    2. Elbert Dijkgraaf & Tom P. van Dorp & Emiel Maasland, 2018. "On the Effectiveness of Feed-in Tariffs in the Development of Solar Photovoltaics," The Energy Journal, , vol. 39(1), pages 81-100, January.
    3. Nils May and Karsten Neuhoff, 2021. "Financing Power: Impacts of Energy Policies in Changing Regulatory Environments," The Energy Journal, International Association for Energy Economics, vol. 0(Number 4).
    4. Karsten Neuhoff & Nils May & Jörn C. Richstein, 2018. "Renewable Energy Policy in the Age of Falling Technology Costs," Discussion Papers of DIW Berlin 1746, DIW Berlin, German Institute for Economic Research.
    5. Kenneth Gillingham & Tsvetan Tsvetanov, 2019. "Hurdles and steps: Estimating demand for solar photovoltaics," Quantitative Economics, Econometric Society, vol. 10(1), pages 275-310, January.
    6. Patrik Söderholm & Ger Klaassen, 2007. "Wind Power in Europe: A Simultaneous Innovation–Diffusion Model," Environmental & Resource Economics, Springer;European Association of Environmental and Resource Economists, vol. 36(2), pages 163-190, February.
    7. Haas, Reinhard & Resch, Gustav & Panzer, Christian & Busch, Sebastian & Ragwitz, Mario & Held, Anne, 2011. "Efficiency and effectiveness of promotion systems for electricity generation from renewable energy sources – Lessons from EU countries," Energy, Elsevier, vol. 36(4), pages 2186-2193.
    8. Couture, Toby & Gagnon, Yves, 2010. "An analysis of feed-in tariff remuneration models: Implications for renewable energy investment," Energy Policy, Elsevier, vol. 38(2), pages 955-965, February.
    9. Li, Aitong & Xu, Yuan & Shiroyama, Hideaki, 2019. "Solar lobby and energy transition in Japan," Energy Policy, Elsevier, vol. 134(C).
    10. Monica Castaneda & Sebastian Zapata & Andres Aristizabal, 2018. "Assessing the Effect of Incentive Policies on Residential PV Investments in Colombia," Energies, MDPI, vol. 11(10), pages 1-17, October.
    11. Hang Thi-Thuy Le & Eleonora Riva Sanseverino & Dinh-Quang Nguyen & Maria Luisa Di Silvestre & Salvatore Favuzza & Manh-Hai Pham, 2022. "Critical Assessment of Feed-In Tariffs and Solar Photovoltaic Development in Vietnam," Energies, MDPI, vol. 15(2), pages 1-20, January.
    12. Shrimali, Gireesh & Jenner, Steffen, 2013. "The impact of state policy on deployment and cost of solar photovoltaic technology in the U.S.: A sector-specific empirical analysis," Renewable Energy, Elsevier, vol. 60(C), pages 679-690.
    13. Chu, Ling & Takeuchi, Kenji, 2022. "The non-operating solar projects: Examining the impact of the feed-in tariff amendment in Japan," Energy Policy, Elsevier, vol. 160(C).
    14. Zhang, Alex Hongliang & Sirin, Selahattin Murat & Fan, Conglai & Bu, Maoliang, 2022. "An analysis of the factors driving utility-scale solar PV investments in China: How effective was the feed-in tariff policy?," Energy Policy, Elsevier, vol. 167(C).
    15. Fell, Harrison & Linn, Joshua, 2013. "Renewable electricity policies, heterogeneity, and cost effectiveness," Journal of Environmental Economics and Management, Elsevier, vol. 66(3), pages 688-707.
    16. Grafström, Jonas & Lindman, Åsa, 2017. "Invention, innovation and diffusion in the European wind power sector," Technological Forecasting and Social Change, Elsevier, vol. 114(C), pages 179-191.
    17. Kyunam Kim & Eunnyeong Heo & Yeonbae Kim, 2017. "Dynamic Policy Impacts on a Technological-Change System of Renewable Energy: An Empirical Analysis," Environmental & Resource Economics, Springer;European Association of Environmental and Resource Economists, vol. 66(2), pages 205-236, February.
    18. Crago, Christine Lasco & Chernyakhovskiy, Ilya, 2017. "Are policy incentives for solar power effective? Evidence from residential installations in the Northeast," Journal of Environmental Economics and Management, Elsevier, vol. 81(C), pages 132-151.
    19. Butler, Lucy & Neuhoff, Karsten, 2008. "Comparison of feed-in tariff, quota and auction mechanisms to support wind power development," Renewable Energy, Elsevier, vol. 33(8), pages 1854-1867.
    20. Özdemir, Özge & Hobbs, Benjamin F. & van Hout, Marit & Koutstaal, Paul R., 2020. "Capacity vs energy subsidies for promoting renewable investment: Benefits and costs for the EU power market," Energy Policy, Elsevier, vol. 137(C).
    21. Deshmukh, Ranjit & Bharvirkar, Ranjit & Gambhir, Ashwin & Phadke, Amol, 2012. "Changing Sunshine: Analyzing the dynamics of solar electricity policies in the global context," Renewable and Sustainable Energy Reviews, Elsevier, vol. 16(7), pages 5188-5198.
    22. Antonelli, Marco & Desideri, Umberto, 2014. "Do feed-in tariffs drive PV cost or viceversa?," Applied Energy, Elsevier, vol. 135(C), pages 721-729.
    23. Sanden, Bjorn A. & Azar, Christian, 2005. "Near-term technology policies for long-term climate targets--economy wide versus technology specific approaches," Energy Policy, Elsevier, vol. 33(12), pages 1557-1576, August.
    24. Todd D. Gerarden, 2023. "Demanding Innovation: The Impact of Consumer Subsidies on Solar Panel Production Costs," Management Science, INFORMS, vol. 69(12), pages 7799-7820, December.
    25. Wen, Daoyuan & Gao, Weijun & Kuroki, Soichiro & Gu, Qunyin & Ren, Jianxing, 2021. "The effects of the new Feed-In Tariff Act for solar photovoltaic (PV) energy in the wake of the Fukushima accident in Japan," Energy Policy, Elsevier, vol. 156(C).
    26. Pyrgou, Andri & Kylili, Angeliki & Fokaides, Paris A., 2016. "The future of the Feed-in Tariff (FiT) scheme in Europe: The case of photovoltaics," Energy Policy, Elsevier, vol. 95(C), pages 94-102.
    27. Novacheck, Joshua & Johnson, Jeremiah X., 2015. "The environmental and cost implications of solar energy preferences in Renewable Portfolio Standards," Energy Policy, Elsevier, vol. 86(C), pages 250-261.
    28. Mitchell, C. & Bauknecht, D. & Connor, P.M., 2006. "Effectiveness through risk reduction: a comparison of the renewable obligation in England and Wales and the feed-in system in Germany," Energy Policy, Elsevier, vol. 34(3), pages 297-305, February.
    29. Nemet, Gregory F., 2006. "Beyond the learning curve: factors influencing cost reductions in photovoltaics," Energy Policy, Elsevier, vol. 34(17), pages 3218-3232, November.
    30. del Río, Pablo, 2012. "The dynamic efficiency of feed-in tariffs: The impact of different design elements," Energy Policy, Elsevier, vol. 41(C), pages 139-151.
    31. Lawrence Haar, 2021. "Design Flaws in United Kingdom Renewable Energy Support Scheme," Energies, MDPI, vol. 14(6), pages 1-26, March.
    32. Kristina Knüpfer & Samuel Matthew G. Dumlao & Miguel Esteban & Tomoya Shibayama & Keiichi N. Ishihara, 2021. "Analysis of PV Subsidy Schemes, Installed Capacity and Their Electricity Generation in Japan," Energies, MDPI, vol. 14(8), pages 1-21, April.
    33. Hoppmann, Joern & Huenteler, Joern & Girod, Bastien, 2014. "Compulsive policy-making—The evolution of the German feed-in tariff system for solar photovoltaic power," Research Policy, Elsevier, vol. 43(8), pages 1422-1441.
    34. Nils May & Karsten Neuhoff, 2021. "Financing Power: Impacts of Energy Policies in Changing Regulatory Environments," The Energy Journal, , vol. 42(4), pages 131-152, July.
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