• 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: romanas.savickas@un.org
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Bio

Romanas Savickas is no longer employed with UNEP Copenhagen Climate Centre or UNEP DTU Partnership since 2025

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Dr. Romanas Savickas is a senior Energy sector professional and Principal/Managing Consultant, with more than 25 years of professional intercontinental experience in Private, Public & Academia sectors, managing Projects of 20-250 mln. USD. He holds a PhD degree in Energy and Thermal engineering (2007).

Dr. Romanas Savickas is developing and managing Energy Efficiency and Climate Adaptation/Mitigation projects by utilising Integrated Energy Systems, District Heating, District Cooling, Renewable, Low Carbon Technologies, Buildings Energy Efficiency, Waste Energy, Digitalisation and Hydrogen technologies, to cut and reduce GHG emissions. An integral and consistent part of the work in collaboration with National and Local Governments creating, engaging, and coordinating Public–Private-Academia Stakeholders groups. The direct support to National and Local authorities includes Technical and Financial Assistance, Capacity building, Trainings, Master Planning, Heating and Cooling Planning, identification of potential policy opportunities and barriers, Technical and Financial Estimates, and development of a Long-term Energy Strategy. Technical Assistance and Consultation, development of Feasibility Studies, Financial Assessments, Innovative Business Models, Legal/Regulatory/Policy, and Socio-Economic Assessments are integral parts of activities.

Dr. Romanas Savickas is the facilitator of Innovative and Digital Energy Technologies, author of "Interactive Actual Energy Consumption Map" for the Vilnius city, Lithuania (the winner of the Ist place in "Eurocities 2014" for the Innovation in the Energy under the Covenant of Mayors). https://www.youtube.com/watch?v=KiVII7hqsl0 

Author of more than 20 scientific publications.

Contribution to IPCC reports to Chapter 6 “Energy systems”, and Chapter 8 “Urban systems and other settlements”. In 2019, Romanas was listed as a Global Energy Elite 2019 by Smart Energy international.

List of Countries:

EU Member Countries, Balkan Countries (Serbia - Belgrade, Bosnia&Herzegovina), Baltic sea region countries (Lithuania, Latvia, Estonia), Chile (Santiago, Temuco, Coyhaique, Renca, Recoleta, Independencia, Valdivia), Argentina (General Alvear, Ubajay), Asia region (Mongolia: Ulaanbaatar and other 10 cities), Central Asia (Kazakhstan, Kyrgyz Republic, Tajikistan, Turkmenistan, Uzbekistan), Ukraine, CIS countries, Columbia, Brazil, etc.