ISEC 2026 - CONFERENCE FOR RENEWABLE HEATING AND COOLING
IN INTEGRATED URBAN AND INDUSTRIAL ENERGY SYSTEMS

Welcome to ISEC 2026.

Following the successful organization of the 3rd International Sustainable Energy Conference - ISEC 2024 (after the events in 2018 and 2022), which welcomed around 400 participants from 35 countries, AEE INTEC will host the 4th International Sustainable Energy Conference - ISEC 2026 from April 15–16, 2026, at the established venue of Messe Congress Graz.

ISEC 2026 will provide an international platform for exchange among researchers, energy policymakers and businesses to swiftly and effectively leverage the opportunities arising from the UN Climate Conferences, the SDG Goals, and European agreements (Green Deal, Fit for 55). The aim is to translate these into actionable strategies through the collaboration of research institutions and companies in the energy and resource sectors. Over the two conference days, ISEC 2026 will focus on various thematic areas, such as the "Role of the Heating Sector and Energy Efficiency" in an interconnected sustainable energy system, as well as ”Research and Innovation in Energy Transition, Circular Economy, and Climate-Neutral Cities”.

What can you expect:

• High-level Key-note speakers
• Presentations, Poster session
• Intensive discussions

The ISEC conference serves as a catalyst for forming new collaborations and initiating transformative projects to accelerate the exit from fossil fuel supply.

We look forward to continuing the dialogue at ISEC 2026!

Christian Fink & Christoph Brunner
Conference Chairs