• Email: aristeidis.tsakiris@un.org
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Bio

Aristeidis Tsakiris is a Mechanical Engineer with over ten years of experience driving energy efficiency initiatives globally. With an MSc in Sustainable Energy from the Technical University of Denmark (DTU), he combines technical expertise with a deep understanding of policy and digital systems to support sustainable development in emerging and developing economies.

At the UNEP Copenhagen Climate Centre (UNEP-CCC), he leads the development of Monitoring & Evaluation systems, digital dashboards, and web-based Knowledge Management Systems (KMS). His work enhances data-driven decision-making and supports the dissemination of best practices through webinars, podcasts, and e-learning platforms, while also contributing to project development, reporting, and stakeholder engagement.

Previously, Aristeidis held key roles at the Copenhagen Centre on Energy Efficiency (C2E2), where he managed digital tools, coordinated over 100 webinars, and supported international workshops and publications. His early career in research and consultancy focused on energy-efficient buildings and transport, laying a strong foundation for his current impact in global energy transition efforts.

• Email: rrds@ens.dk
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Bio

Rahul Raju Dusa is no longer employed with UNEP Copenhagen Climate Centre or UNEP DTU Partnership since 2022

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Rahul is a Special Advisor at the Danish Energy Agency. He is currently managing key elements of the energy efficiency development engagements under government-to-government partnership programs such as the Danish Energy Partnership Programme III with Viet Nam and the Strategic Sector Cooperation with Egypt.

He earlier worked with UNEP DTU (now UNEP-CCC), The Energy and Resources Institute (TERI) and Climate Technology Centre and Network (CTCN) where he contributed to undertaking comprehensive analysis and systematization of the main policy issues, conducted qualitative and quantitative studies providing expert technical advice on relevant measures, training and other direct support associated with energy efficiency.

Rahul is a Bureau of Energy Efficiency (BEE) Certified Energy Auditor, in India. He has wide experience in accounting and mitigating GHG emissions, policy formulation and policy-driven projects, and evaluation of suitable energy efficient technologies for individual industries, buildings, local municipalities and national government bodies in Asia Pacific region, Africa and Latin America to support their climate change mitigation goals and enhance cost-effective outcomes.

Rahul has graduated in Chemical Engineering and Masters in Renewable Energy Engineering and Management.

• Email: clara.camarasa@un.org
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Bio

Clara is a Senior Advisor at the UNEP Copenhagen Climate Centre, specializing in energy, green finance, and climate policy. With over a decade of experience, she provides technical advice, policy analysis, and strategic guidance to support the global energy transition and sustainable development efforts.

Prior to joining UNEP-CCC, Clara worked as a Policy Analyst at the International Energy Agency (IEA), where she led initiatives in energy efficiency for cooling, buildings, appliances, and equipment. She was also responsible for the E4 Programme in Latin America and China. Her work included designing programs, delivering policy advice, conducting training sessions, and developing analytical frameworks.

She holds a Ph.D. in civil and environmental engineering and serves as a guest lecturer at Harvard University, where she teaches on sustainable building futures. Most recently, Clara was the lead author of the Global ESCO Market Report and co-author of the Global Status Report for Buildings and Construction, among others.

• 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.