EY Sustainability

What if tackling the complexities of climate change could be simple?

Tackling the world’s most complex and urgent challenge won’t be easy – but there are many simple ways we can take meaningful action and transition to a sustainable future together.

The team

Photographic portrait of Barbara Spiegel
Barbara Spiegel
Partner, Sustainability Lead | EY Switzerland
Stephan Geiger
EY Switzerland ESG Leader, Financial Services
Mundia Moola Buesser
Director, Sustainability Consulting | EY Switzerland

The top leaders are approaching this challenge as a great opportunity to reframe their strategy, accelerate the transition and build trust. They are creating new products, services, experiences and processes with sustainability built in, so they deliver for all of their stakeholders – today’s and tomorrow’s.

We work together to bring a different view and address key challenges:

  • How can we make decarbonization doable?
  • How do we take the complexity out of compliance?
  • How can we build trust around our ESG activities?
  • How can we manage ESG Data and automate?
  • How do we reorganize our value creation?
  • Is there a simpler way of financing the transformation?

How EY can help

With our holistic insights, multidisciplinary talent, proven capabilities and powerful ecosystem, we have the depth and breadth of expertise to find the best way forward.

We’ll bring the methodologies and expertise; you bring your enthusiasm and willingness to create a sustainable impact. Together, we’ll get things done.

Explore our key solutions to help you transform to value-led sustainability. Contact our teams for more information. 

Sustainability - How prepared is your business?

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The EY Sustainability team is ready...are you ready too?

How can value realized today reshape tomorrow?

With our EY Switzerland Sustainability Report 2023 we provide insights on the impact we have on our people, clients, society and the environment.

Read more
Hiking in mountain

How EY can help

How EY can help

  • Sustainable Finance

    EY sustainable finance teams helps financial services companies define sustainability goals that create value and make a measurable difference. Learn more.

    Read more

How EY can help

How EY can help

  • Sustainability and ESG strategy consulting 

    EY sustainability and ESG strategy consulting teams can help you with strategy, M&A, capital allocation, ESG due diligence and portfolio optimization.

    Read more

  • Long-term value creation metrics

    EY Long-term value teams can help you shape your strategy, drive transformation and measure progress in providing sustainable value through use of the WEF-IBC’s common metrics. EY leading role in developing the metrics means we’re uniquely placed to advise on their adoption and impact.

    Read more

How EY can help

How EY can help

How EY can help

The team

Barbara Spiegel

Partner, Sustainability Lead | EY Switzerland
Advocate for profitable business within planetary boundaries. Sustainability innovator. ESG transformation expert. Passionate rock climber.
Zurich, CHE

Stephan Geiger

EY Switzerland ESG Leader, Financial Services
Responsible for building the Sustainable Finance team in Switzerland. Trusted advisor in regulatory transformation and governance projects. Passionate about family, sports, mountains and the ocean.
Zurich, CHE

Mundia Moola Buesser

Director, Sustainability Consulting | EY Switzerland
Passionate about adding extra value to her work. A mom of two and a professional figure competitor.
Zurich, CHE

Nathan Richards

Partner, Operating Model Effectiveness and Transfer Pricing, Europe West Sustainability Tax and Law Leader
Designs and transforms to sustainable operating models. Green tax element evaluation and planning. BEPS-aligned operating model solutions. Transfer pricing planning and controversy management.
Zurich, CHE

Stephan Hirschi

Partner, EY Sustainability | EY Switzerland
Dedication and systems thinking is what is needed to combine business impact with the needs of a sustainable future.
Zurich, CHE

Dr. Mark Veser

Partner, Head Climate Change and Sustainability Services | EY Switzerland
Sustainability leader, ESG expert. Family man, off-the-beaten-path traveler, squash enthusiast.
Zurich, CHE

Cyril Motte

Partner, Head of Climate Change and Sustainability Services in Financial Services I EY Switzerland
Trusted advisor, empathetic and inclusive leader passionate about providing long term value to the financial sector.
Geneva, Lancy, CHE

Jonathan Baumeler

Director, Indirect Tax/Global Trade | EY Switzerland
Technology enthusiast. Helps clients realise the benefits of Trade automation and analytics. Supporter of sustainability and conservation of natural heritage. Loves spending time in the mountains.
Zurich, CHE

Carmen Sprus

EY EMEIA Sustainability Solution Lead | EY Switzerland
Energetic, visionary advisor on net zero. Creative entrepreneur, leader and relationship builder. Excited to drive transformation and reimagine business models. Loves salsa and mountain sports.
Zurich, CHE

Jeroen Truin

Partner, Operating Model Effectiveness EMEIA, Swiss Sustainability Tax and Law Leader | EY Switzerland
Transformation driven. Helps clients find the right balance between operational and tax requirements. Embeds sustainability taxes in strategic thinking. Loves spending time on his bike.
Geneva, Lancy, CHE

Esther van Laarhoven-Smits

Partner, Data & Analytics Lead, Consulting | EY Switzerland
Experienced Data & Analytics professional who gets excited by supporting companies to improve decision making resulting in e.g. better performance, more satisfied customers and employees.
Zurich, CHE

Célien Fitoussi

Senior Manager, Lead Power & Utilities sector, Strategy and Transactions | EY Switzerland
Transaction advisory and strategy consulting in the energy sector.
Basel, CHE

Paulina Korecka

Partner, Financial Accounting Advisory Services, US-Focused Markets Group and Enhanced Accounting & Reporting Leader Switzerland, Ernst & Young | EY Switzerland
Head of Enhanced Accounting & Reporting team in Switzerland. Focusing on US-facing clients. Purpose-driven leader. Mentor. Committed to advancing diversity, equity and inclusiveness.
Zurich, CHE
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EY refers to the global organization, and may refer to one or more, of the member firms of Ernst & Young Limited, each of which is a separate legal entity. Ernst & Young Limited is a Swiss company with registered seats in Switzerland providing services to clients in Switzerland.