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

REGISTER FOR ISEC 2026

The 4th International Sustainable Energy Conference – ISEC 2026 invites researchers, industry leaders, and energy policymakers from around the world to contribute their newest findings, innovations and demonstrations toward a sustainable energy future.

ISEC 2026 will focus on the question: How can we achieve energy sovereignty within a time horizon dictated by climate change and defined by politics?
Global solutions such as the transformation of our economic systems towards a sustainable circular economy, the complete phase-out of fossil fuels, the implementation of sector coupling, energy storage systems, and the smart electrification of the energy supply will be central themes in presentations and discussions.

As an engine for forward-thinking concepts, ISEC 2026 aims to push groundbreaking ideas for the heat transformation in renewable energy systems and improved resource efficiency. The conference fosters a comprehensive exchange between research, industry, and policymaking.

Through collaborations with key international organizations such as UNIDO and IEA, the conference will also place a special emphasis on solutions for developing and emerging economies, particularly in the Global South.

Highlights to look forward to:

• Welcome Reception (evening 14 April) featuring a Science Slam and an engaging live experiment
• Keynotes opening both conference days, setting the stage for the most relevant developments in policy, industry and research
• Dinner Speech by Dr. Kandeh Yumkella, former UNIDO Director-General: “A Just and Resilient Energy Transition in a Fragmented World”
• Interactive workshops and strong international perspectives, including dedicated sessions with a focus on the Global South
• Poster presentations with a Pitch Session format for selected posters and best poster award
• Plenty of time for informal exchange and networking, with additional opportunities to connect with industry via the newly established Industry Board and the trade exhibition.

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

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