Our Experts

Benjamin Simmons photo
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.

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.

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.

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.

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.

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.

Triston Easton

Senior Project Manager

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.

Matthew Gouett

Sustainable Finance Analyst, IISD

As a Sustainable Finance Analyst, Matt works with colleagues to co-create the financial calculations that underpin the economic valuations of nature-based infrastructure investments.

Kiranne Guddoy

Communications Officer, IISD

Kiranne 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.

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.

Marco Guzzetti

Associate, IISD

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

Flavia Thomé

Head of Operations, Economic Law and Policy, and Advisor to the President & CEO on Project Operations, 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.

Sophie Blais headshot
Sophie Blais

Communications Assistant, IISD

Sophie is a Communications Assistant in IISD’s Economic Law and Policy Program.


Project Steering Committee

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

Executive Director, IISD Europe; Senior Director, Economic Law & Policy, IISD

Nathalie is a senior international lawyer and leads IISD’s Economic Law and Policy Program. She manages IISD’s work on international trade, investment, and finance, as well as sustainable mining, agriculture, and infrastructure. She oversees the NBI Global Resource Centre.

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.

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

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.

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.

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.

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.

Anne Hammill

Senior Director 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.

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.

Josephine Musango

Professor System Dynamics, Stellenbosch University

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.

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.

Professional portrait for F1F9.

05/09/2016 Professional portrait for F1F9, financial modelling specialists based in Bath, UK. Managing director Morten Siersted.

Morten Siersted

Director, F1F9

Morten is the Founder of F1F9, a specialist provider of financial modelling and spreadsheet support services. He is now a Director focused on sustainable development goals related opportunities.