• Email: jcalder@wwf.fr
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Bio

Jennifer Calder manages the World Wide Fund for Nature’s global work on energy efficiency. She joined the WWF in April 2018 after seven years spent working at the Organisation for Economic Cooperation and Development (OECD), working on issues related to climate mitigation and policy measures to accelerate the decarbonisation of OECD economies. Jennifer holds a Masters Degree in Environment, Politics and Globalisation from King's College London (UK) as well as a Bachelor of Science in Environmental Science from the University of York (UK).

• Email: xianli.zhu@un.org
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Bio

Xianli Zhu is no longer employed with UNEP Copenhagen Climate Centre or UNEP DTU Partnership since 2025

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Xianli’s work focuses on analysing and designing enabling policies and programmes for energy efficiency improvement and climate change mitigation.

Her work focus has shifted to energy efficiency since 2015, and currently, she works on improving the transparency of climate actions in China, the monitoring, reporting and verification of district energy projects, as well as efficient cooling.

She has coordinated the preparation of multiple reports and publications on best practices for energy efficiency improvement in different sectors and countries, high-impact opportunities for energy efficiency, as well as policies and potential for energy efficiency improvement in Africa.

She has long-standing experience working on climate change mitigation, especially market mechanism and technology needs assessment. She has been involved in the implementation of multiple international technical assistance projects on energy efficiency, low-carbon development, technology needs assessment, and the Clean Development Mechanism as regional and national coordinator. In addition, she has in-country working experience (research, consultancy, project implementation) in China, Vietnam, Mongolia, Sri Lanka, Malawi, as well as Fiji, Vanuatu, Solomon Islands, and Samoa.

Xianli holds a PhD in Economics and she has been working at UNEP DTU Partnership (now UNEP Copenhagen Climate Centre) since 2006, first as an economist and then as a senior researcher.

• Email: helene.rochat@topten.ch
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Hélène Rochat is an energy efficiency project manager at Topten. As an expert on appliances she works on policy related matters for the EU Ecodesign and Energy Label regulations to promote energy efficient products. Her work involves research on products, their markets, development and product testing to achieve better regulation. A Swiss national, she is fluent in English, French, Italian and German. She holds a Master in Environmental Sciences (MSc. ETH) from the ETH Zurich. She is a member of the TEAP Energy Efficiency Task Force, a task force to investigate the challenges and opportunities for energy efficiency during the phase-down of HFCs in the context of the Kigali Amendment.

• Email: danhg@climateworks.org
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Dan Hamza-Goodacre has over 20 years’ experience working on climate and sustainable development. Previous roles include the Director of Buildings & Industry at ClimateWorks and the Deputy CEO of PwC’s Climate and Development Knowledge Network. Dan held various senior posts in UK government, notably at Defra and the UK Foreign Office. He is a regular speaker and moderator at conferences  and has written widely on climate and development. He holds an MSc in International Development from Bristol University, where he also was a lecturer and researcher in global environmental politics. He has lived and worked in latin American rainforests and volunteers in schools to support their ‘green’ teams.

• Email: Paul.kellett@un.org

Bio

Paul Kellet manages UN Environment’s global ‘United for Efficiency’ (U4E) programme that is transforming developing and emerging markets to more energy-efficient appliances and equipment. Paul has been involved in energy efficiency and renewable energy projects over the past 20 years. This included 10 years managing Irish Energy Centre programmes and as the Manager of the Irish National Renewable Energy Programme. He received the EU Commission’s award for technology diffusion in 2003, The European Energy Award, for establishing the framework for 40% renewable electricity in Ireland from a zero base. Paul is a Mechanical Engineer from the National University of Ireland.

• Email: timgrabiel@eia-international.org
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Tim Grabiel is an experienced environmental lawyer based in Paris, France. He joined the Environmental Investigation Agency (EIA) in 2011, providing legal and policy advocacy at the European Union and international levels, including at the Montreal Protocol. Prior to joining EIA, Tim spent 1.5 years working in Brussels and 6 years working in the United States on environmental law and taught as an adjunct professor at Sciences Po-Le Havre in France. Tim is a law graduate of New York University (NYU) School of Law and received his undergraduate degree in Economics/International Area Studies from the University of California, Los Angeles (UCLA).