Kyushu University Academic Staff Educational and Research Activities Database
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KEELEY Ryota Alexander Last modified date:2024.06.03

Associate Professor / Urban and Environmental Engineering
Faculty of Engineering

Other Organization

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 Reseacher Profiling Tool Kyushu University Pure
Field of Specialization
Urban Engineering, Energy Economics, Sustainability Science
ORCID(Open Researcher and Contributor ID)
Total Priod of education and research career in the foreign country
Research Interests
  • We are conducting empirical research on a wide range of complex problems facing cities, such as energy depletion, environmental pollution, population decline, and disasters, using multifaceted and interdisciplinary approaches including urban engineering and economics.
    keyword : Energy Economics; Urban Engineering; Environmental Economics; Corporate Activity Analysis
Academic Activities
1. Keeley, Alexander R., Kento Komatsubara, and Shunsuke Managi, The value of invisibility: factors affecting social acceptance of renewable energy, Energy Sources, Part B: Economics, Planning, and Policy, 10.1080/15567249.2021.1983891, 17, 1, 1-20, 2021.10, Notwithstanding the global turn to renewable energy, its development is constrained by a lack of social acceptance. Various studies have evaluated citizens’ acceptance of and willingness to pay (WTP) for renewable energy and associated factors. We broadened the analytical framework of previous studies by incorporating spatial data on renewable and nonrenewable power plants, natural and produced capital, and renewable energy potential to determine key factors affecting social acceptance measured through WTP for renewable energy in Japan. We found that besides respondents’ ages, sex, education levels, and household incomes, their proximity to existing power plants generating renewable and nonrenewable energy and natural capital endowments in their locations significantly affected their WTP for renewable energy. Our analysis further revealed that whereas visible solar PV plants located within 3 km of respondents’ residences negatively affected their WTP, less visible plants at high elevations did not impact negatively on social acceptance..
2. Sunbin Yoo, Alexander Ryota Keeley, Shunsuke Managi, Does sustainability activities performance matter during financial crises? Investigating the case of COVID-19, Energy Policy, 10.1016/j.enpol.2021.112330, 155, 112330-112330, 2021.08.
3. Rinawati, Dyah Ika, Alexander Ryota Keeley, Shutaro Takeda, and Shunsuke Managi., A systematic review of life cycle assessment of hydrogen for road transport use
, Progress in Energy 4, no. 1 (2021): ., 10.1088/2516-1083/ac34e9, 4, 1, 012001, 2021.02.
4. Clarence Tolliver, Alexander Ryota Keeley, Shunsuke Managi, Policy targets behind green bonds for renewable energy: Do climate commitments matter?, Technological Forecasting and Social Change, 10.1016/j.techfore.2020.120051, 157, 120051, 2020.12.
5. Clarence Tolliver, Hidemichi Fujii, Alexander Ryota Keeley, Shunsuke Managi, Green Innovation and Finance in Asia, Asian Economic Policy Review, 10.1111/aepr.12320, 16, 1, 67-87, 2020.11.
6. Alexander Ryota Keeley, Ken’ichi Matsumoto, Kenta Tanaka, Yogi Sugiawan, Shunsuke Managi, The Impact of Renewable Energy Generation on the Spot Market Price in Germany: Ex-Post Analysis using Boosting Method, The Energy Journal, 10.5547/01956574.41.si1.akee, 41, 01, 119-139, 2020.09.
7. Clarence Tolliver, Alexander Ryota Keeley, Shunsuke Managi, Drivers of green bond market growth: The importance of Nationally Determined Contributions to the Paris Agreement and implications for sustainability, Journal of Cleaner Production, 10.1016/j.jclepro.2019.118643, 244, 118643, 2020.01.
8. Clarence Tolliver, Alexander Ryota Keeley, Shunsuke Managi, Green bonds for the Paris agreement and sustainable development goals, Environmental Research Letters, 10.1088/1748-9326/ab1118, 14, 6, 064009, 2019.05, Abstract

The Paris Agreement under the United Nations Framework Convention on Climate Change and the Sustainable Development Goals (SDGs) of the United Nations Development Programme both entail substantial global investments through cost-efficient, long-term financing. Noted for their risk-alleviating features and appeal to institutional and socially responsible investors, green bonds are gaining prominence in climate change and sustainable development finance frameworks. This study is the first to thoroughly examine publicly reported green bond proceeds allocations from 53 organizations to projects and assets throughout 96 countries from 2008 to 2017. Green bond markets are growing rapidly, and yearly proceeds allocation trends reveal increasing disbursements to renewable energy, clean water, low-carbon transportation, and other Paris Agreement and SDG-related investment categories. Circle plot analysis reveals unique allocation trends to specific green sectors at both regional and national levels. International finance institutions allocated the largest share of proceeds by both frequency and volume, and the projects and assets financed with green bonds in this study sample are associated with over 108 million tonnes of carbon dioxide equivalent (tCO2e) in greenhouse gas emissions reductions and over 1500 gigawatts in renewable energy capacity. The study concludes with suggestions for improving green bond post-issuance reporting and provides insights for future green bond applications in expanding Paris and SDG agendas.

9. Alexander Ryota Keeley, Shunsuke Managi, The importance of financial cost for renewable energy projects: economic viability assessment of renewable hybrid mini-grid systems in Indonesia, Green Finance, 10.3934/GF.2019.2.139, 1, 2, 139-155, 2019.05, Still a lot of Indonesia's population lacks access to electricity, and a large number of those people live in remote areas or on islands. Traditionally, electrification of areas not yet connected to the main electricity grid and too remote for grid extension has mainly been achieved through installation of decentralized generation units with diesel generators. However, with decreased cost of renewable energy technologies, renewable hybrid mini-grid systems are becoming economically viable options in an ever-increasing number of places. This paper analyzes the economic viability of renewable hybrid mini-grid systems with solar Photo-Voltaic cells, batteries, and diesel generators in a typical un-electrified village in Indonesia employing local data. The analysis is conducted by utilizing HOMER simulation techniques to design the optimal renewable hybrid mini-grid systems and the economic viability assessment of the system is performed by comparing the levelized cost of energy of the system with that of the conventional diesel system under different financial scenarios. Further financial analyses, such as Internal Rate of Return and Net Present Value, are performed for the hybrid systems to investigate what kind of financial scenarios (debt/equity ratios) and public aid (international aid and government fund), would make the hybrid systems attractive to private investors. The analysis has clarified that even at the most conservative scenario with 100% equity finance, the levelized cost of energy of the renewable hybrid mini-grid system is lower than that of the diesel system. Further analysis has shown that grant finance that covers 35% of the total project cost could make the hybrid system a profitable investment project for private investors even in the most conservative scenario. The paper also demonstrates that the profitability of renewable hybrid mini-grid systems is highly affected by financial scenarios (debt/equity ratios) in comparison with that of diesel systems, concluding with policy recommendations..
10. Shutaro Takeda, Alexander Ryota Keeley, Shigeki Sakurai, Shunsuke Managi, Catherine Benoît Norris, Are renewables as friendly to humans as to the environment? A social life cycle assessment of renewable electricity, Sustainability (Switzerland), 10.3390/su11051370, 11, 5, 2019.03, The adoption of renewable energy technologies in developing nations is recognized to have positive environmental impacts; however, what are their effects on the electricity supply chain workers? This article provides a quantitative analysis on this question through a relatively new framework called social life cycle assessment, taking Malaysia as a case example. Impact assessments by the authors show that electricity from renewables has greater adverse impacts on supply chain workers than the conventional electricity mix: Electricity production with biomass requires 127% longer labor hours per unit-electricity under the risk of human rights violations, while the solar photovoltaic requires 95% longer labor hours per unit-electricity. However, our assessment also indicates that renewables have less impacts per dollar-spent. In fact, the impact of solar photovoltaic would be 60% less than the conventional mix when it attains grid parity. The answer of "are renewables as friendly to humans as to the environment?" is "not-yet, but eventually"..
11. Alexander Ryota Keeley, Ken’ichi Matsumoto, Relative significance of determinants of foreign direct investment in wind and solar energy in developing countries – AHP analysis, Energy Policy, 10.1016/j.enpol.2018.08.055, 123, 337-348, 2018.12.
12. Hironari Inoue, Alexander Ryota Keeley, 日本における小水力発電の普及に係る障壁と課題 ―事業主体の視点から―, Nenryo Kyokai-Shi, Journal of the Fuel Society of Japan, 97, 8, 245-251, 2018.08.
13. Alexander Ryota Keeley, Policy Intervention as a Determinant of Foreign Direct Investment : Implications from Renewable Energy Sector, Japanese review of political society : journal of the Association for the Study of Political Society, 5, 5, 55-69, 2018.05.
14. Alexander Ryota Keeley, Ken'ichi Matsumoto, Investors' perspective on determinants of foreign direct investment in wind and solar energy in developing economies – Review and expert opinions, Journal of Cleaner Production, 10.1016/j.jclepro.2017.12.154, 179, 132-142, 2018.04.
15. Alexander Ryota Keeley, Yuichi Ikeda, Determinants of foreign direct investment in wind energy in developing countries, Journal of Cleaner Production, 10.1016/j.jclepro.2017.05.106, 161, 1451-1458, 2017.09.
16. Alexnader Ryota Keeley, Timothy Dean, Perceived Market Risk of the Renewable Energy Industry in the United States, 九州産業大学経営学会経営学論集, 27, 3, 85-92, 2017.07.
17. Alexander Ryota Keeley, Renewable Energy in Pacific Small Island Developing States: the role of international aid and the enabling environment from donor's perspectives, Journal of Cleaner Production, 10.1016/j.jclepro.2016.05.011, 146, 29-36, 2017.03.
18. Alexander Ryota Keeley, Timothy Dean, Third Financial Bailout for India's State-owned Power Distribution Companies-and Why it Matters, 九州産業大学経営学会経営学論集, 27, 2, 21-30, 2016.10.
19. Dimiter Ialnazov, Alexander Ryota Keeley, Motivations, Enabling Factors and Barriers to the Energy Transition in Indonesia and Vietnam, 2020 6TH INTERNATIONAL CONFERENCE ON ENVIRONMENT AND RENEWABLE ENERGY, 10.1088/1755-1315/505/1/012044, 505.
1. キーリーアレクサンダー竜太, ESG Assessment for Products and Services: Research and Practice, Mirai Open Day, 2023.11.
2. キーリーアレクサンダー竜太, Measuring Environment, Social, Economic Impact of Energy Technologies Considering Supply Chain – A Novel Integrated Assessment Method, MIRAI 2.0 R&I Week 2021, 2021.06.
3. キーリーアレクサンダー竜太, Sustainability Modeling: Challenges and Solutions, WORKSHOP ON ADVANCING METHODS FOR MODELING SYSTEMS TO INFORM SUSTAINABILITY SCIENCE, 2021.06.
4. キーリーアレクサンダー竜太, Renewable Energy and Energy Market: Supply Impact and Demand Change, Kyushu-Illinois Strategic Partnership Colloquia Series #3 Environmental Economics, 2021.05.
5. キーリーアレクサンダー竜太, Measuring environmental, social, and governance impacts of DAC-U system: an integrated assessment method, Kyushu-Illinois Strategic Partnership Colloquia Series, 2021.01.
6. キーリーアレクサンダー竜太, Merit Order Effect: The Impact of Renewable Energy Generation on the Spot Market Price in Germany
, CREST Workshop, Economics-Engineering Modeling for Global and Long-term Issues: Climate Change, Energy and Social Development, 2020.03.
7. キーリーアレクサンダー竜太, 新国富指標と持続可能性, 水俣環境アカデミア, 2020.05.
8. キーリーアレクサンダー竜太, The Value of Invisibility: Factors Affecting Willingness to Pay for Renewable Energy, 15th CONFERENCE ON SUSTAINABLE DEVELOPMENT OF ENERGY WATER AND ENVIRONMENT SYSTEMS , 2020.09.
Membership in Academic Society
  • Society of Global Business
  • The International Association for Energy Economics
Educational Activities
Research focusing on analysis of financial aspect and economic, environment, social impact of Energy and Environment sector.
Professional and Outreach Activities
As one of the young researchers from Kyushu University, I gave an invited lecture at the first and third symposiums of the "Kyushu-Illinois Strategic Partnership Colloquia Series" with the University of Illinois, with which a strategic partnership was established in August 2019. I was also invited to the workshop "Workshop on advancing methods for modeling systems to inform sustainability science," which was organized by prominent scholars working on sustainability mainly in Europe and the United States, with the aim of establishing an international research project. We were invited to the workshop, "Workshop on advancing methods for modeling systems to inform sustainability science," which was held by prominent scholars who are doing research on sustainability. .