Analysis of pv subsidy schemes, installed capacity and their electricity generation in japan

Kristina Knüpfer*, Samuel Matthew G. Dumlao, Miguel Esteban, Tomoya Shibayama, Keiichi N. Ishihara

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


Solar PV capacity growth in Japan has been facilitated by a number of government schemes that have been implemented since 1994. Publicly available capacity data are provided by a number of agencies and organisations at various resolutions and at different stages within these schemes. This study provides a comprehensive review of solar PV data sources in Japan between 1994 and 2019, as well as an introduction to the subsidy schemes and organisations involved in scheme management and data collection in Japan. As a result, the authors produced their own dataset of installed capacities and generation across time for the various regions. Lastly, this study provides insights and recommendations to policy makers regarding opportunities for improving the accessibility and quality of data from a user perspective and to enhance Japan’s presence in international research.

Original languageEnglish
Article number2128
Issue number8
Publication statusPublished - 2021 Apr 2


  • FIT
  • Japan
  • Open data
  • RPS
  • Renewable portfolio standard
  • Solar PV
  • Subsidy schemes

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Energy (miscellaneous)
  • Control and Optimization
  • Electrical and Electronic Engineering


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