Researchers

IKARII, Ryohei

Executive Economist, Renewable Energy Group Manager, Clean Energy Unit

Specialty: Energy Economics, Development Economics

Dec 2018	The Australian National University, Crawford School of Public Policy, Master of International Development Economics
March 2000	Osaka University, Osaka School of International Public Policy, Master of International Public Policy
March 1998	Osaka University, Bachelor of Law
April 2020	The Institute of Energy Economics, Japan
March 2019	Japan Internationational Cooperation Agency
Jan 2018	ANU Development Policy Centre
Apri 2013	The Institute of Energy Economics, Japan
April 2000	Osaka Gas Co., Ltd.

Study on ASEAN Power Grid (2024-2025), JICA
Bangladesh Integrated Energy and Power Maste Plan (2021-2022), JICA.
The Economics and Risks of Power Systems with High Shares of Renewable Energies(2021), ERIA.
Preparation of Energy Outlook and Analysis of Energy Saving Potential in East Asia Region (2013-2015, 2020-2022), ERIA.

Ikarii, R 2026, ‘Next-Generation Geothermal Power in Japan: Current Landscape, Challenges, and Policy Imperatives’, JPXjoIN, Japan Exchange Group (2026)
Ikarii, R, Motoki, Y, Hagita, T, Tomoda, Y & Shibata, Y 2026, ‘The ASEAN Power Grid Supporting Energy and Economic Security : Japan’s Potential Contributions’, The Institute of Energy Economics, Japan.
Ikarii, R 2024, ‘Attention-Attracting Support for Clean Cooking Penetration in Africa’, IEEJ Eenrgy Joutnal, vol.19, no.4, pp. 16-19
Ikarii, R 2023, ‘The Outlook for the Adoption of Electric Vehicles in the United States by 2050～Considered by extending the scenarios for the United States in the IEA Global EV Outlook 2022～’, IEEJ Eenrgy Journal, vol.18, no.1, pp. 63-66.
Ikarii, R 2020, ‘COVID-19: Impacts of Lower Oil Export Revenues on the Finances of Gulf Oil-producing Countries’, IEEJ Energy Journal, vol.15, no. 4, pp. 8-12.
Hirai, H, Shibata, Y, Ikarii, R, Lu, Z & Kawakami, Y 2017, ‘Thinking about Hydrogen Town -Energy System as Social Infrastructure-’, The Institute of Energy Economics, Japan. (Only Summary for English)

<Peer-reviewed Papers>

Ikarii, R, Yumiko, I & Matsuo, Y 2022, ‘Myanmar’s Optimal Power Generation Mix and Grid Interconnection Considering Climate Policies: A Quantitative Analysis Using a Cost Minimization Model’, Journal of Japan Society of Energy and Resources, vol. 43, no. 5, pp.186-196 (Only Abstract for English)
Ikarii, R 2019, ‘Do high renewable energy targets hinder donor-funded rural electrification in Pacific island countries?’, The Journal of Pacific Studies, vol. 39, no. 1, pp. 30-51.