Our Experts

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Benjamin Simmons

Director, NBI Global Resource Center, IISD

Benjamin Simmons is Director of Sustainable Infrastructure and Director of the Nature-Based Infrastructure Global Resource Centre for IISD’s Economic Law and Policy Program. In these roles, Ben manages IISD’s work related to sustainable infrastructure, sustainable finance, and public procurement.

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Liesbeth Casier

Senior Policy Advisor, IISD

Liesbeth is an advisor in public procurement and works with the Sustainable Asset Valuation (SAVi) methodology to make the case for sustainable infrastructure. She co-leads the NBI Global Resource Centre and provides strategic input to scale up the use of nature in infrastructure planning.

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David Uzsoki

Senior Advisor and Lead, Sustainable Finance, IISD

David leads IISD’s work on sustainable finance and works with financial stakeholders to demonstrate the business case for sustainable investments. He co-developed the SAVi methodology and leads its financial modelling component.

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Andrea Bassi

Senior Associate, IISD

Andrea uses systems approaches to identify, quantify, and assess the socio-economic and environmental outcomes of policies and investments. He has supported sustainability efforts in more than 40 countries and provides technical leadership for the NBI Global Resource Centre.

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Morten Siersted

Senior Associate, IISD

Morten’s specific focus is on the economic and financial modelling of sustainable infrastructure projects. This includes developing and maintaining the spreadsheet-based modelling components of IISD’s Sustainable Asset Valuation (SAVi) modelling framework.

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Ronja Bechauf

Research and Policy Analyst, IISD

Ronja works with the SAVi methodology to help policy-makers make informed infrastructure decisions. She supports stakeholders in creating suitable governance arrangements and planning processes for nature-based infrastructure.

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Emma Cutler

System Dynamics Analyst, IISD

Emma develops system dynamics models for SAVi assessments. She works with colleagues and stakeholders to quantify the socio-economic and environmental impacts of nature-based infrastructure projects.

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Triston Easton

Senior Project Manager, IISD

Tristan is a Senior Project Manager in IISD’s Economic Law and Policy Program. He has a wealth of experience managing teams with diverse mandates to set and reach common goals.

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Georg Pallaske

Associate, IISD

Georg is an IISD Associate and a Project Manager at KnowlEdge Srl. He conducts SAVi-related research, creates customized system dynamics models, and helps deliver workshops and advisory services.

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Marco Guzzetti

Spatial Modeler, KnowlEdge

Marco is a Research Fellow at KnowlEdge Srl and works with spatial models to map and value ecosystem services at different scales.

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Flavia Thomé

Director of PMO and Head of Operations (ELP), IISD

Flavia leads and manages the operational and administrative functions of IISD’s Economic Law and Policy Program. She provides project management expertise for the NBI Global Resource Centre.

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Maria Barral

Communications Officer, IISD

Maria is a Communications Officer in IISD’s Economic Law and Policy Program and works to develop the program’s strategic visibility and impact in order to create positive change.

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Becca Challis

Communications Officer, IISD

Becca is a communications officer with the Economic Law and Policy program. She works to create content for programs, engage with the public, conduct media outreach, and create digital strategies.


Project Steering Committee

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Chizuru Aoki

Lead Environmental Specialist, the GEF Programming Unit

Chizuru heads GEF’s strategy and representation in multiple global environmental agreements and leads GEF’s engagement with the 2030 Agenda for Sustainable Development.

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Nathalie Bernasconi-Osterwalder

Vice-President Global Strategies and Managing Director, Europe, IISD

Nathalie, LL.M, is Vice-President Global Strategies and Managing Director, Europe and directs the Economic Law & Policy Programme of the International Institute on Sustainable Development (IISD). In this role, she manages IISD’s work on international trade, investment, and finance. On a sectoral level, this work spans across sustainable agriculture, mining, and infrastructure. She also oversees IISD’s function as the Secretariat of the Intergovernmental Forum on Mining, Minerals, Metals and Sustainable Development (IGF) and the China Council for International Cooperation on Environment and Development (CCICED).She oversees the NBI Global Resource Centre.

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Ákos Kőszegváry

Officer-In-Charge, GEF/GCF/AF Coordination & Partnerships Coordination Division, UNIDO

Ákos has led UNIDO’s GEF/GCF/AF Coordination and Partnership Coordination Division since June 2021. He has held various positions in UNIDO’s Technical Cooperation Programmes and he coordinated UNIDO’s Programme on the Implementation of the Montreal Protocol.

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Holger Schmid

Director, Switzerland, Sustainable Economy, MAVA Foundation

Holger is responsible for implementing MAVA’s strategy for Switzerland, as well as the Sustainable Economy Programme. He oversees all projects and partner relations for both programmes.


Technical Advisory Committee

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Motoko Aizawa

President, Observatory for Sustainable Infrastructure

Motoko is the President of the Observatory for Sustainable Infrastructure and leads their work to promote sustainable, resilient, and human rights-compliant infrastructure projects with public benefits.

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Nana Ama Browne-Klutse

Professor Climate Science, University of Ghana 

Dr Nana Ama Browne Klutse is a Lead Author and a member of the Task Group on Data Support for Climate Change Assessments at the Intergovernmental Panel on Climate Change.

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Leonardo Garrido

Lead Economist, New Climate Economy

Leonardo is a Development Economist who conducts applied economic and empirical research on a range of topics, from climate and the socio-economy to the dynamics of poverty, inequality, and growth.

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Stelios Grafakos

Principal Economist, Global Green Growth Institute

Stelios leads GGGI’s work on analysing and modelling low emission pathways, assessing socio-economic impacts of low carbon policies and actions, and helping develop Long-Term Low Emissions Development Strategies.

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Anne Hammill

Associate Vice-President, Resilience, IISD

Anne leads IISD’s Resilience Program, which works with different actors to manage climate- and conflict-related risks through better planning, more inclusive and equitable processes, and healthier ecosystems.

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Craig Mackieson

Managing Director, First Guardian Capital

Craig has extensive experience in investment banking and corporate finance, including in arranging and underwriting large infrastructure, power and utility, energy, and natural resource and property projects.

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Josephine Musango

Professor System Dynamics, Graduate Business School, University of Cape Town

Josephine has over sixteen years’ experience using system dynamics modelling to manage change and policy-related challenges related to the energy transition, green economy, and urban Africa energy issues.

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Corinne Namblard

Sustainable Infrastructure Investment Expert

Corinne is an expert in infrastructure and financial markets, specializing in financial engineering and funding large and complex projects, as well as dedicated infrastructure funds.