From May 20 to 22, 2025, the Low2HighDH project proudly took part in the 21st International Conference of Young Scientists on Energy and Natural Sciences Issues (CYSENI 2025), hosted at the Lithuanian Energy Institute in Kaunas. This annual event brings together young professionals and researchers from across Europe and beyond, offering a vibrant platform for presenting cutting-edge research and forging long-term scientific partnerships.
This year’s conference welcomed 80 participants from 7 countries, along with five keynote speakers who addressed current challenges and innovations in the fields of energy and environmental sciences. Among the distinguished keynote presenters was David Pérez, the coordinator of the Low2HighDH project, who introduced the project’s mission to decarbonise high-temperature district heating (DH) systems across Lithuania, Poland, and Slovakia.

David’s presentation highlighted the project’s efforts to facilitate the uptake of low-grade and waste heat technologies—including solar thermal, low-temperature geothermal, and heat pumps—in high-temperature DH networks.
Participation in CYSENI 2025 allowed the Low2HighDH project not only to share its innovative approach to transforming district heating but also to engage directly with young researchers and professionals shaping the future of clean energy in Europe.
During the visit to Lithuania, the Low2HighDH team — including Rolandas and Rimantas from the Lithuanian Energy Institute (LEI), and David, the project coordinator — visited one of the first pilot sites selected for support, located in Rukla.

The on-site discussions with representatives of the district heating operator focused on gathering the necessary technical and economic information to proceed with the analysis. This exchange marked an important step toward structuring tailored technical and financial support for the site, in line with the project’s methodology, which includes data reception, analysis, projections, and the preparation of a customised market analysis report.


We thank the Lithuanian Energy Institute for hosting this dynamic conference and look forward to continued collaboration with the next generation of energy leaders.