Previous consulting clients

International Organizations

• World Bank/IFC

• Rockefeller Philanthropy Advisors

• Glasgow Financial Alliance for Net Zero (GFANZ)

• Finance for Development Lab, Paris

• World Green Building Council Africa Regional Network

• Grantham Research Institute, London School of Economics (LSE)

• Organisation of Southern and Eastern African Insurers (OESAI)

• African Venture Philanthropy Alliance

United Nations (UN) Agencies

• United Nations Environment Programme (UNEP)

• United Nations Conference on Trade and Development (UNCTAD)

• United Nations Climate Change High-Level Champions

• Partnership for Action on Green Economy (alliance of five UN agencies)

Financial Sector

Central Banks and Industry Associations

• Central Bank of Kenya

• Central Bank of West African States (BCEAO)

• Bank of Central African States (BEAC)

• Kenya Bankers Association

Commercial Banks

• KCB Bank Group

• Equity Bank Group

• Absa Bank

• Bank of Africa

• Co-operative Bank

• Ecobank Kenya

• Habib Bank AG Zurich

• Kingdom Bank

• Development Bank

• Consolidated Bank

Faculty & Teaching Engagements

• Strathmore University 

• Strathmore Business School

• University of Cape Town (UCT) Graduate School of Business

Expert Contributions & Workshops

• World Economic Forum (WEF)

• Chatham House Africa Programme

• International Energy Agency

• Smith School, University of Oxford

• International Emissions Trading Association

• Alliance for Financial Inclusion

• African Research Impact Network

• Sustainability and Climate Risk (SCR®) Program

• Sustainable Energy for All (SEforALL)

• National Assembly of Zimbabwe

• Stockholm+50 Regional Consultations

Previous Employement

• UNEP FI 

• Credit Suisse

• McKinsey & Company

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Published works

• Wambui, R., & Cheruiyot, J. (2025). Project-based guarantees in climate finance: Enhancing effectiveness and scale. Paris: Finance for Development Lab. External contribution.

• Wambui, R., Feyertag, J., & Monnin, P. (2023). Net zero central banking in Africa's diverse economies: challenges, opportunities and policy options. London: Grantham Research Institute on Climate Change and the Environment, London School of Economics and Political Science.

• Mohieldin, M., Kenewendo, B., & Wambui, R. (2023). Breaking Financing Barriers for a Just Climate Transition in Africa. Accra: African Center for Economic Transformation. 

• Kimundi, G. & Wambui, R. (2023). Climate Change, Climate Policy Relevant Sectors and Banking Sector (In)Stability: A Vulnerability Assessment. Nairobi: Kenya Bankers Association.

• Kimundi, G. & Wambui, R. (2023). Climate Change, Climate Policy Relevant Sectors and Banking Sector (In)Stability: A Vulnerability Assessment [Policy brief]. Nairobi: Kenya Bankers Association.

• Wambui, R. (2021). Climate-related Financial Risks for Kenyan Banks: An Analysis of Loan Portfolios and GHG Emissions. Geneva: Graduate Institute Publications.

• Wambui, R. (2019). Systemic Interventions for Sustainable Capital Financing. St. Gallen Symposium. 

• Makambi, S., Kimundi, G., & Wambui, R. (2017). Influence of Bank Lending to the Government on Private Sector Credit in Kenya: A Fiscal Deficit Specification. Nairobi: Kenya Bankers Association.  

• Franceschi, L., Memusi, S., & Wambui, R. (2015). The Cost of Devolution in Kenya: A Cost Analysis of the New Governance Framework Introduced by the 2010 Constitution of Kenya and its Impact on the Country’s Public Finance. Africa Policy Journal, Harvard Kennedy School.

Book chapter

• Wambui, R. (2022). Scaling Up Sustainable Finance and Investment in the Global South: A Case Study on Sub-Saharan Africa. In: Schoenmaker, Di and Volz, Ulrich, (eds.), Scaling Up Sustainable Finance and Investment in the Global South, London: Centre for Economic Policy Research (CEPR).

Commissioned work and expert contribution

• Contributing author: Factsheet: Breaking Financing Barriers for a Just Climate Transition in Africa - African Center for Economic Transformation (2023)

• Lead author: Report on the Industry Workshop on the Central Bank of Kenya (CBK)’s Guidance on Climate-related Risk Management - Kenya Bankers Association & UNEP FI (2022)

• Lead author: Greening the SMEs: Improving SME Access to Green Finance in Mauritius - UN PAGE (2021)

• Contributing author: Climate Risk Regulation in Africa’s Financial Sector and Related Private Sector Initiatives - AfDB, GCA, & UNEP FI (2021)

• Contributing expert: Sustainable Investment in Kenya: Increasing the Quantity and Quality of Investment Flows - World Economic Forum (2021)

Other research contributions

• UNCTAD (2023). SDG Investment Trends Monitor: Issue 4, September. SDG Investment is Growing, but Too Slowly: The Investment Gap is Now $4 Trillion, up from $2.5 in 2015. New York and Geneva: United Nations. United Nations publication.

• UNCTAD (2023). World Investment Report 2023: Investing in Sustainable Energy for All. New York and Geneva: United Nations. United Nations publication.

• UNICEF (2016). The links between Equity, Governance, Education and Peacebuilding in Kenya. Nairobi: Eastern and Southern Africa Regional Office.

• World Bank (2013). Kenya Innovation Survey.

Media articles and interviews

• Business Daily Africa (2024): Third-party assurance is the new frontier in sustainability reporting - Wambui, R.

• Business Daily Africa (2024): Kenya must deepen its economic diplomacy in a globalised world - Wambui, R.

• World Economic Forum (2023): Why trillions more are needed to bridge the SDG financing gap - Zhan, J., Casella, B., Wambui, R., & Vine, R.

• Green Central Banking (2023): African central banks can help build low-carbon and green economies - Wambui, R., Feyertag, J., & Monnin, P.

• Project Syndicate (2023): How to Close Africa's Climate-Finance Gap - Mohieldin, M., Kenewendo, B., & Wambui, R.

• Business Daily Africa (2023): How chief sustainability officer role has evolved - Wambui, R. & Shah, R.

• Business Daily Africa (2023): Why Kenya needs information resource tools like climate directory - Wambui, R.

• Africa Ahead (2022): The Role of Young Insurance Professionals in Mitigating the Effects of Climate Change Risk in Africa - Wambui, R.

• Global Shapers Zurich (2022): Interview on working in the area of climate change and sustainable finance - Wambui, R.

• Geneva Graduate Institute (2020): Perspective on the Master in International Economics | Reuben Wambui [Video]. 

• Business Daily Africa (2019): More Women in Management No Longer Tokenism for Firms - Wambui, R.

• PhD in International Economics Merit Scholarship – Geneva Graduate Institute, Switzerland

• Rudi Dornbusch Prize for best Master thesis in Economics – Geneva Graduate Institute, Switzerland

• Global Winner, Wings of Excellence Award – St. Gallen Symposium, Global Award

• Credit Suisse Merit Scholarship – Geneva Graduate Institute, Switzerland

• Silver Award Winner – UNLEASH Innovation Lab, Singapore

• Values Day Leadership Award – McKinsey & Company, Kenya

• First Runner-Up, CFA Institute Research Challenge – CFA Institute, East Africa

• Most Outstanding Student Award – Strathmore University, Kenya

• Best Overall Student in Financial Economics – Strathmore University, Kenya

• Undergraduate Scholarship – Shah Ranmal Raja Charitable Trust, Kenya

Curriculum Vitae Download CV

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Contacts

LinkedIn    Reuben M Wambui

Email reuben.wambui@graduateinstitute.ch 

cc reuben@kenyaclimatedirectory.org