Scroll Through Past GreenBuzz Zurich Speakers

Virtual Thematic Event: From Linear to Circular – How A Circular Economy Can Help Reach Our Climate Goals

March 25th, 2021

Patricia Matzdorf-Gobeli
Senior Partnership & Project Manager, Innovation & Socio-Economic Change at WWF Switzerland

Caspar von Daniels
Project Manager Circular Business Innovation at Circle Economy

Virtual Informal Drinks: World Water Day

March 22nd, 2021

Samuel Renggli
Head of WASH & Knowledge at Wasser für Wasser (WfW)

Virtual Thematic Event: To Engage or Divest? Strategies to Solve This ESG Investors’ Dilemma

March 11th, 2021

Taeun Kwon
Head of Wealth Management Programs at CSP, University of Zurich

Ellen Quigley
Advisor to the CFO & Senior Research Associate at CSER, University of Cambridge

Julian Kölbel
Postdoctoral Researcher at CSP, University of Zurich

Matthias Narr
Head Engagement International at Ethos Foundation

Emma Farrell
ESG Distribution & Advisory at Credit Suisse Asset Management

GreenBuzz Zurich x One Planet Lab: How to Host Brilliant Online Events

February 25th, 2021

Nick Owen
Business Director Switzerland at wtv.

Rachel Dale
Events Manager at GreenBuzz Zurich

Erin Duddy
Online and Next Gen Programme Lead at CSP

Virtual Informal Drinks: Engage or Divest? Strategies for Sustainable Investing

February 11th, 2021

Lisa Lange
ESG Engagement & Stewardship, EOS at Federated Hermes

Virtual Workshop: How to Build A Sustainable Business Model

February 10th, 2021

Martha Velasco
Co-Founder & Managing Director at 2get-there

Roy Franke
Co-Founder & Managing Director at 2get-there

Virtual New Year’s Drinks: Hot Topics 2021!

January 26th, 2021


Virtual New Year’s Thematic Event: Inspiration for A Decade of Change

January 14th, 2021

Anian Schreiber
Founder & Managing Director at Koa

Marie Griesmar
Co-Founder at rrreefs

Res Witschi
Delegate for Sustainable Digitalisation at Swisscom

Vanessa Rueber
Enviro Marketing Operations Coordinator at Patagonia

Pauline Treis
Founder / CEO at Jungle Folk

Matthias Narr
Head Engagement International at Ethos Foundation

Barbara Luchsinger
Project Manager Transformation at Energie 360° AG

Virtual Thematic Event: Sustainable Buildings Making Retrofitting the New New!

December 1st, 2020


Marcel Brülisauer
Head Of Product Management Solutions at Energie 360° AG, Co-Founder Netto Null Kollektiv

Virtual Informal Drinks: Impact Washing How to Spot and How to Avoid

November 25th, 2020


Virtual Thematic Event: The Responsible Business Initiative A Gamechanger for Sustainable Development, or Not?

November 10th, 2020

Sybille Baumgartner
Director & Co-Founder bei focusright ltd.

Manuel Rotzinger
Public Affairs Leader IKEA Switzerland


Isabelle Schluep
Head of Sustainable Impact at CCRS at the University of Zurich

Virtual Unconference: Migration Underrepresented But Key to Achieving the SDGs

October 27th, 2020

Marie Froehlicher
ESG Specialist at S&P Global



Kristina Touzenis
Managing Director KP&K Impact Solutions, former Head of International Migration Law Unit at the IOM

Thematic Event: Food Production & Technology  Greener Together?

October 6th, 2020

Urs Niggli
Director at FiBL

Frederic Hemmeler
CEO at Aero41 Ltd


Pierre Kauffmann
Blockchain Leader Switzerland, IBM


Frits Vranken
CCO at AgroSustain

Rafael Waber
CEO at SwissShrimp

Mounia Boujija
Head of Portfolio & Brand Management at Chocolat Frey AG

Informal Drinks: Road to Regeneration – Resilience Through Networking

October 1st, 2020

Rachel Joyce-Gibbons Head of Agriculture Debt Investments, Latin America at responsAbility Investments AG

Dirk Dijksma
Head of Innovation Investments at Symbiotics

Virtual Unconference: Equality and Why It’s Integral to Sustainability

September 17th, 2020

Aysha Van de Paer
Gender Equality Activist, Founder of investlikeaysha

Jan Reynders
Gender Justice and Sustainable Development consultant and activist

Thematic Event: How Can Tourism Become a Force For Good?

September 10th, 2020

Luigi Cabrini
Chairman of the board, GSTC

Carlos Martin-Rios
Associate Professor of Management, EHL

Daniela Schöb
Sustainability Manager, Zurich Tourism

Virtual Unconference: How to Succeed in Switzerland’s Energy Transition

July 7th, 2020

Massimiliano Capezzali
Professor in Energy and Head of Energy Competence Center at HEIG-VD.

Sandra Klinke
Head of the Energy Department at Amstein + Walthert.

Christian Bach
Head of the Move Demonstrator and the Automotive Powertrain Technologies Lab at Empa.


GreenBuzz Joint Event: Post Covid – Our Opportunity for a More Sustainable World

June 25th, 2020

Falko Paetzold
Founder of GreenBuzz, Managing Director of the Center for Sustainable Investment and Private Wealth at the University of Zurich.

Jonathan Normand
Founder and Executive Director of B Lab Switzerland.

Meera Ghani
Policy Coordinator at Ecolise.

Henrik Nordborg
Programme Director at HSR and Professor of Physics at IET.

Virtual Informal Drinks: Gender Lens Investing – Hype or Opportunity?

June 11th, 2020

Olga Miler
Award-winning innovator & entrepreneur. Co-Founder of Smart Purse.


Virtual Unconference: Can Covid-19 Create Positive Momentum for Systems Change

May 26th, 2020

Beat Ringger
Swiss author and executive director of the Denknetz think tank.

Joséphine von Mitschke-Collande
Systems Innovation and Ecosystem Lead for Climate-KIC.

Virtual Thematic Evening: EU Action Plan – A Gamechanger for the Financial Industry

May 12th, 2020

Emma Farrell
Asset Management at Credit Suisse.

David Simeon
Policy Change Manager at Credit Suisse.

Alexandra Molnár
Management Consultant at Accenture.

Beate Born
Executive Director at UBS.


Virtual Informal Drinks: Pesticide-Free Agriculture

May 7th, 2020

Niklas Möhring
Consultant and Postdoctoral Researcher at ETH Zurich.

Gabriele Mack
Expert from Agroscope.

Virtual Unconference: Prioritize Your Organization’s Efforts to Tackle Climate Change

April 28th, 2020

Stephen Neff
CEO at myclimate – the Climate Protection Partnership.

Martina Hartmann
Business Development & Sustainability Consulting at South Pole.

Bastien Girod
Director at South Pole, Lecturer at the University of Lucern and Member of the National Council.

Renée LaPlante
Consultant and Founder of Decarbonista.


Virtual Workshop: Intercultural Competence

April 7th, 2020

Nadja Scherrer
Impact Strategist, Intercultural Communication and Diversity Expert, Associate of the Social Impact Boutique PLUS305.

Virtual Informal Drinks: EU Action Plan

April 2nd, 2020

Kelly Hess
Sustainability and Sustainable Finance Expert, Director of Projects at Swiss Sustainable Finance.

Virtual Workshop: Sustainability Communication

March 26th & April 30th, 2020

Andreas Renggli
Communication Expert and Associate of Polarstern Communication Agency.

Moderator Training: Unconferences

February 27th, 2020

Duane Raymond
Campaign Strategist, Managing Director and Founder of FairSay.

Innovative Breakfast: Blended Finance – Mobilizing Private Capital for Impact

February 6th, 2020

Stephanie Bilo
Chief Client & Investment Solutions Officer, member of the Executive Management at responsAbility Investments AG.

Maya Ziswiler
Executive Director, Programs and Social Finance at UBS Optimus Foundation. Maya is an experienced expert on social and blended finance.

Markus Schnell
Deputy Head of Section at SECO (State Secretariat for Economic Affairs). Lukas is an expert on financial topics and especially blended finance.

Taeun Kwon
Head of Wealth Management Programs at CSP (Center for Sustainable Finance and Private Wealth of the University of Zurich). Taeun is currently doing her PhD on blended finance and innovative finance at the University of Zurich.

Thematic Evening: Towards a Circular Plastics Economy

January 23th, 2020

John Duncan
Experienced environmental expert currently leading the Global Initiative: No Plastics in Nature at WWF.

John Revess
Director of Plastics and Packaging at WBCSD (World Business Council for Sustainable Development). He created powerful brand positioning around circular economy and is an expert in supply chain material stewardship.

Christine Zwahlen
Project Manager Sustainability at Federation of Migros Cooperatives.

Hanna Krayer
Project Manager Sustainability at Federation of Migros Cooperatives.

Beat Karrer
Managing Director of FluidSolids Biocomposites. Their goal is to establish FluidSolids® biocomposites as the most sustainable substitute for petroleum-based plastics in the market, thereby making a valuable contribution to solving the global plastics waste problem without compromising performance, cost-effectiveness or design.

Sarah Schumacher
Responsible Packaging at Lush.

Petros Timotheou
Founder and CEO Innovopolis – an integrated decentralised waste management model that transforms private and public spaces into waste free, energy efficient ecosystems.

Simon Sudbury
Moderator and former Director of BBC Music & Entertainment and EMEA.

GreenBuzz Annual Christmas Dinner

December 12th, 2019

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Earthling Ed aka Ed Winters

Vegan spokesperson, educator, author and filmmaker based in London. Winters is the co-founder of Surge, an animal rights organisation. He has spoken at numerous international universities, including as a guest lecturer at Harvard University in April 2019. In early 2019, he gave two TEDx talks.


Workshop: ESG Implementation – Beyond Box-Ticking

November 19th, 2019


Claudia Würstle
ISSP Sustainability Associate and Consultant at HCM International, a management consulting firm.

Dr. Tamara Maria Teves
Legal Advisor at MME Legal Tax Compliance, an innovative, cutting edge consulting firm for legal, tax and compliance needs.

Thematic Evening: Addressing the Energy Transition – Filling the Gap

October 29th, 2019

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Dr. Martin Rüdisüli
Research associate at the EMPA research centre for Materials Science and Technology. He published the newest study (June 2019) on the future of the Swiss electricity system.

Franziska Steidle-Sailer
Strategic Market Development Manager at AQUON, a catamaran powered by green hydrogen and solar energy, where she developed an international branding strategy for a sustainable, green hydrogen-based propulsion system. Before, she was the project leader for Corporate Development & Strategic Sustainability at EWZ.



Dr. Christian Zeyer
PhD in physics, is the managing director of Swisscleantech, a Cleantech Business Association bringing together Swiss companies that promote environmentally friendly business models.

Dr. Matthias Gysler
Chief Economist at the Swiss Federal Office of Energy (SFOE) and lecturer in microeconomics at ETHZ.

Innovation Breakfast: The Future of Mobility and Spatial Planning in Switzerland

October 2nd, 2019


Prof. Claudio Büchel
Professor of traffic planning at HSR (Hochschule für Technik Rapperswil) – is an experienced traffic planner. Before his professorship and lectureship at HSG, Claudio worked for SBB as a supply planner and the Zurich public transport as an area manager. 

Linus Grob
He works at the Swiss Federal Railway’s long-term planning unit, which is tasked with identifying potentials for improving mobility in Switzerland in 2040+. This includes thinking in scenarios, spaces and intermodal travel chains, but also the evaluation of the impacts any futuristic mobility concept may have.

Andrea Del Duce
Senior Research Associate at the Sustainable Transport Systems Group of the University of Applied Science of Zurich (ZHAW). His work focuses on the transition towards sustainable mobility and particularly on the interaction between mobility and user behaviour. 

Daniel Sutter
He joined INFRAS in 2004 and has been its managing partner since 2018, heading the transport section at INFRAS in Zurich. His main focuses are transport economics, transport policy (impact analyses, financing, policy instruments), corporate strategy, environmental impacts and costs, as well as impact assessments and sustainability assessments.

Han van de Wetering
Architect with an MSc in Urbanism. Han is the founder of the urban design studio “Van de Wetering Atelier für Städtebau” in Zurich. He is an expert in the integral planning of mobility and urbanism and lectures at various schools and universities. His office won the Swiss Urbanism Award 2018 (Stadtlandpreis). 


Innovation Breakfast: How to Communicate Sustainability to Your External Stakeholders

September 26th, 2019

Daniel Krieg
Founder and CEO of KSP Krieg Schlupp Partner, an independent and owner-managed Swiss advertising agency. Before founding KSP (2004), Krieg was Creative Director at Publicis and Copywriter at WHS and GGK Zurich. Before that, he worked in investment banking at Credit Suisse, in the consumer goods industry and in the publishing industry.

Manuela Huck-Wettstein
Senior sustainability consultant at Sustainserv, a leading international sustainability management consultancy based in Boston and Zurich. Manuela has professional experience as a project and innovation manager, including for Credit Suisse and Swiss advertising and PR agencies. She is a certified GRI Trainer instructing professionals about reporting according to the sustainability reporting standards.

Robert Dornau
Director of ESG Benchmarking at RobecoSAM. Previously, he was vice president of Climate Change Services at SGS (Société Générale de Surveillance) and Managing Partner at Carbonflow™. At RobecoSAM, he is responsible for promoting CSA (Corporate Sustainability Assessment) participation within companies. Furthermore, Robert Dornau is responsible for the digital product development for ESG benchmarking.

Andreas Renggli
Owner of communication agency Polarstern AG – is a communication and PR expert. Besides his work at Polarstern, he is a PR lecturer at KV Luzern. Andreas Renggli consults businesses in their sustainability communication, including PR, branding etc. In 2004, he won the award “Ritter der Kommunikation” in the category Youth for the online magazine Youthguide for his work to improve access to information and communication technologies.

Gabriel Hansmann
Research analyst for Globalance Bank – has a passion for investments with positive impact. At Globalance, he evaluates the impact of investments on the economy, society and the environment. Furthermore, Gabriel Hansmann is deeply engaged in global megatrends and finding creative ways to assess opportunities and risks. He analyses investments in all asset classes as well as interactions between financial analysis and impact.

Philipp Bachmann
Senior research and teaching associate at the Institute of Mass Communication and Media Research (IKMZ) of the University of Zurich. His research interest focuses on strategic communication, corporate social responsibility, news media quality, and new technologies. He is the journal manager of Studies in Communication Sciences (SComS), an international Platinum open access journal of communication research.

Margreet Groot
Global communications lead for Cocoa Life, the cocoa sustainability program of Mondelez International. Cocoa Life places a strong focus on providing equal opportunities for the women in the 1000+ cocoa growing communities Mondelez International works with. She has a background in business, international relations, gender and CSR and has lived, studied and worked in the Netherlands, South Africa, Denmark, India and Switzerland.


Unconference: Challenges of Sustainability Professionals

September 18th, 2019

Duane Raymond
Campaigning strategist and innovator – is an expert on digital transformation and sustainable business. He is also the founder and managing director of FairSay Ltd. His experience ranges from business (consultancy with many companies while with Cap Gemini + financial services and sustainability in UBS) to civil society (Oxfam, AIESEC and FairSay). Over the last 15 years, he has helped shape digital campaigning at civil society organizations around Europe.

Neelke Verhelst
Global Sustainability Operations Lead at Barry Callebaut – has worked for Barry Callebaut for the last 9+ years. She is one of the leaders of Barry Callebaut’s project ‘Forever Chocolate’, in which they defined ambitious sustainability goals. The project’s goals include child labour free supply chains, lifting 500 000 cocoa farmers out of poverty, being carbon and forest positive and sourcing 100% of the ingredients sustainably.

Thematic Evening: Blockchain for Sustainable Supply Chains

June 20th, 2019

Philipp Spaeti
CTO of IBM, an distinguished IBM engineer. He has extensive experience in the IT business and is working for some of IBM’s largest clients, on topics including Internet of things, blockchain as well as artificial intelligence and machine learning.

Micha Roon
CTO of Energy Web Foundation, is a veteran software engineer who has contributed to many blockchain projects including applications in asset management, advertising and document management.

Sabine Loetscher
Senior Head of Sustainable Markets & Deputy Head of Markets at WWF Switzerland, and has 14 years of experience in the private sector, consultancies, and NGOs. She is interested in the potential of technology, business model innovation and corporate sustainability as drivers for a sustainable world.

Harald Rauter
Senior Innovation Specialist at Climate-KIC. He is leading innovations at Climate-KIC, the largest public-private climate change partnership and main EU initiative. Harald has a flair for innovation and for bringing people together to deliver results that will speed innovation related to climate change.

Thematic Event: Die Zukunft der Städtischen Mobilität

April 4th, 2019


Pascal Kienast
Collaborator at the SCCER CREST, Swiss Competence Center for Energy Research, and co-founder of CLEMAP. Pascal is a master at facilitating knowledge transfer and dissemination. He is providing specific start-up and corporate entrepreneurship support through his work at SCCER.

Stephan Parlow
Research assistant and doctoral candidate (Fachbereich Nachhaltigkeitsforschung) at the University of Basel. Stephan Parlow is leading research into the positive impact of cargo bikes to replace car journeys in cities.

Thomas Stoiber
Environmental expert in mobility and transport at the “Baudirektion Kanton Zürich”. Thomas Stoiber is responsible for issues related to transport and mobility in the environmental agency of the canton of Zurich and has experience as a consultant in transport planning.

Christina Spoerry
Leader of the team ‘traffic and urban spaces’ at the “Tiefbauamt” of the City of Zurich. She discussed the present situation in Zurich, the challenges faced and the objectives that Zurich has set to reduce car traffic by 10% in 10 years and how shared mobility can contribute to this goal.

Tabea Leibundgut
Former Business Development Manager at the Mobility Cooperative. Tabea developed new business models to extend the Mobility car sharing to Mobility scooters. Now, she is a project manager at the innovation lab of the AMAG Group. 

Thematic Event: Why Construction Materials Matter

April 2nd, 2019

Beat Ryhner
Head of Shared Services & Headquarters at the Department for Economic Development of the Canton of Zurich.

Dr. Holger Hendrichs
Head of Sales and Marketing at GreenTEG AG. GreenTEG’s thermal insulation measuring devices make thermal monitoring more precise and simpler.

Alexander Eisenhauer
Head of Airium™ at LaFarge Holcim. He is responsible for business development and the deployment of LafargeHolcim’s new sustainable insulation technology Airium™ and is the corporate single point of contact for all new building segment offers in the Middle East & Africa and in North America.

Christina Nakhle
Project Manager at the Sustainability and Technology Lab at ETHZ. The lab’s projects include scouting for and assessing sustainable construction material, building energy performance regulations in Europe as part of the project for the development of the upcoming Swiss building energy code (MuKEn) and Swiss climate policy and energy strategy.

Olivier Enger
Senior Innovations Manager and Technology Scouting at BASF Schweiz AG. His current technology focuses include sensors and diagnostics, emerging materials for the life science industry, advanced optics, Carbon technologies and energy management.


Innovation Breakfast: World Water Day

March 22nd, 2019

Bella Roscher
Project Manager Business and Consumption at WWF Switzerland.

Joanne Wong
Marine Ecologist and Independent Environmental Consultant.

Alexandra Frank
Senior Consultant at South Pole, Team for Corporate Water Stewardship and Supply Chains.


Thematic Event: Supply Chains Beyond Reputational Risk

March 12th, 2019

Dr. Bastien Girod
Regional Director at South Pole, Member of Parliament, Scientist & Lecturer at ETH Zurich and Corporate and Industry Consultant. As member of parliament Bastien co-develops Environmental Policy. Furthermore, he is the president of the Swiss waste management association. At South Pole, he supports selected companies on their sustainability journey.

Naomi Rosenthal
Principal & Deputy Director and Expert in Sustainable Supply Chains at the South Pole Group. Naomi leads a team that works to transform agricultural supply chains in Africa, Latin America and Asia, enabling long term sustainability. She is passionate about building knowledge around environmental risks and opportunities.

Sarah Vowles
Senior Sustainability Manager at IWC. In her role, Sarah is leading industry standard setting and compliance to avoid environmental degradation and ensure that good working conditions are upheld along the whole supply chain.


Thematic Evening: Advocating Climate Friendly Business Events

February 26th, 2019


Uta Kroll
Head of the Convention Bureau at Zurich Tourism.

Frank Marreaux
Former Managing Director of MCI Switzerland. Currently Managing Director of Expomobilia, MCH Live Marketing Solutions.

Anders Tellefsen
Global Category Management & Procurement Lead at Takeda Pharmaceuticals International AG.


Thematic Event: Innovation Against Food Waste

January 31st, 2019

Thomas Vellacott
CEO of WWF Switzerland.

Dr. Fanny Brun
Behavioural Economist.

Dr. Claudio Beretta
Research Associate at ETHZ. President of Food Waste Switzerland.

Naomi MacKenzie
Co-Founder of Kitro.

Lucie Rien
Country Manager of TooGoodToGo Switzerland.

Lukas Bühler
Founder of Zum Guten Heinrich.

Monica Cipelletti
Co-Founder and CEO of ZüriChips and Team Enabler at Stride.