Sustainability conferences in Austria and Switzerland in 2026

Here’s SustainabilityOnline’s guide to the top sustainability conferences and events taking place in Austria and Switzerland over the coming year. This guide will be updated as and when new events are announced – check back regularly for updates. Other events taking place around Europe can be found here.

Sustainability conferences in Austria

Event: Oil & Gas Decarbonisation Congress 2026 (DECARBON 2026)
Date(s): 9-10 February 2026
Location: Vösendorf
Website: https://sh.bgs.group/3o7

The Oil & Gas Decarbonisation Congress is a networking and knowledge-sharing event for the upstream, midstream, and downstream sectors of the oil and gas industry, focusing on decarbonisation strategies such as low-carbon hydrogen, sustainable fuels, energy efficiency, CCUS, and digital tools. The event will bring together industry experts, companies, and service providers to share case studies, technologies, and approaches for achieving net-zero goals.

Event: World Sustainable Energy Days 2026 (WSED 2026)
Date(s): 24–27 February 2026
Location: Wels
Website: https://www.wsed.at/

WSED 2026 is an annual conference focused on energy transition, climate neutrality, and sustainable energy solutions. The event will include multiple conferences covering energy efficiency, industrial energy transition, and smart e-mobility, along with a sustainable energy trade show. It will bring together policymakers, researchers, and industry professionals to share knowledge, present policies and innovations, and discuss strategies for achieving climate-neutral energy systems.

Event: 9th Sustainable Investor Summit (SIS 9) – DACH 2026
Date(s): 18–19 March (Vienna), 22 April (Zurich), 12–13 May (Frankfurt) 2026
Location: Vienna / Zurich / Frankfurt
Website: https://ic-icf.com/sis9_home/

The 9th Sustainable Investor Summit (SIS 9) is a leading conference series on sustainable, responsible, and impact investing across the DACH region. Taking place across three events, in Vienna, Zurich and Frankfurt, it will gather institutional investors, asset managers, corporations, policymakers, academics, and NGOs to exchange insights, discuss strategies for sustainable finance, and foster collaboration.

Event: RENEXPO 2026
Date(s): 19–20 March 2026
Location: Salzburg
Website: https://www.renexpo.at/en/

RENEXPO 2026 will focus on the energy of the future, focusing on renewable energy systems, hydropower, energy storage, and innovative sustainable technologies. The event will bring together experts from business, politics, construction, and engineering to exchange knowledge, discuss innovations and regulatory frameworks, and promote collaboration for Austria’s energy transition.

Event: 4th International Sustainable Energy Conference (ISEC 2026)
Date(s): 14–16 April 2026
Location: Graz
Website: https://isec-conference.at/frontend/index.php

ISEC 2026 will focus on renewable heating and cooling within integrated urban and industrial energy systems. The conference will welcome researchers, industry leaders, and policymakers to discuss energy sovereignty, the transition to circular economies, fossil fuel phase-out, sector coupling, energy storage, and smart electrification. Organised in collaboration with UNIDO and the IEA, it will emphasise sustainable energy solutions and resource efficiency, including applications for developing and emerging economies.

Event: Austrian World Summit
Date(s): 16 June 2026
Location: Vienna
Website: https://www.schwarzeneggerclimateinitiative.com/

The Austrian World Summit (pictured), organised by the Schwarzenegger Climate Initiative, is an annual event focused on climate action and sustainability solutions. The 2026 edition marks the 10th anniversary and will take place at the Hofburg Palace. The summit will bring together climate leaders, policymakers, and organisations to share best practices, showcase projects, and foster collaborations to address the global climate crisis.

Event: EurOMA 2026
Date(s): 27 June – 2 July 2026
Location: Vienna
Website: https://www.euroma2026.org/

EurOMA 2026 is the annual conference of the European Operations Management Association, focusing on research and innovation in operations management. This year’s event will address themes such as circular operations, digital transformation, human-technology interaction, resilient supply chains, and operations management in emerging economies and crisis contexts.

Event: Fecc Congress 2026
Date(s): 14-16 September 2026
Location: Vienna
Website: https://www.fecc-congress.com/

The Fecc Congress is an event for professionals across the chemical value chain, bringing together industry leaders, experts, and stakeholders. The congress will feature panels, expert presentations, and in-depth discussions on environmental ambitions, competitiveness, geopolitical impacts, green chemistry, and the future of Europe’s chemical industry.

Event: 3rd Sustainable Tourism in Austria Summit (STiAS 2026)
Date(s): 10–11 November 2026
Location: Linz
Website: https://stias.austria.info/en/

STiAS 2026 is organised by Austria Tourism in collaboration with the Federal Ministry of Economy, Energy and Tourism and the Austrian Federal Economic Chamber. The summit will serve as a platform for networking and knowledge exchange, highlighting sustainable tourism projects and best practices.

Event: Enlit Europe (Enlit 2026)
Date(s): 10–12 November 2026
Location: Vienna
Website: https://www.enlit-europe.com/

Enlit Europe 2026 is an event focused on harnessing the energy ecosystem to drive Europe’s decarbonisation and digitalisation. The conference will bring together utilities, grid operators, tech leaders, policymakers, and innovators to explore the latest trends in renewable energy, smart grids, eMobility, hydrogen, and energy storage.

Sustainability conferences in Switzerland

Event: Sustainability Days 2026
Date(s): 2026 (exact dates TBD)
Location: Zurich
Website: https://www.sustainability-days.ch/en

Sustainability Days is Switzerland’s platform for sustainability, combining a congress, exhibition, and networking opportunities. The event will gather decision-makers, pioneers, and experts from business, academia, and the public sector to share knowledge, promote practical solutions, and advance interdisciplinary collaboration toward a sustainable future.

Event: Sustainable Buildings and Construction Summit 2026
Date(s): 20–22 April 2026
Location: Lausanne
Website: https://sustainable-construction.org/

The Sustainable Buildings and Construction Summit 2026, held at the SwissTech Convention Center, will bring together academia, government, and industry to discuss resilient and sustainable built environments. The summit will feature presentations, discussions, and showcases of implementation projects, with a focus on promoting sustainable construction practices, including initiatives from the Global South.

Event: Climate Week Zurich 2026
Date(s): 4–9 May 2026
Location: Zurich
Website: https://climateweekzurich.org/

Climate Week Zurich is a multi-stakeholder platform for climate action, connecting business, policymakers, and society to promote sustainability and innovation. The event will feature over 150 curated activities, aiming to accelerate climate adaptation, resilience, risk mitigation, and the integration of economic and environmental goals at local and global levels.

Event: Towards a Just and Habitable World: Exploring the Role of Technology
Date(s): 2-5 June 2026
Location: Lausanne
Website: https://pathways.futureearth.org/sustainability-science-conference/

This interdisciplinary conference at the University of Lausanne will examine the role of technology in shaping sustainable futures amid global crises, including climate change, biodiversity loss, and social inequality. Bringing together researchers from natural and social sciences, engineering, and humanities, the event will explore how technological systems – past, present, and future – can both support and undermine planetary and human well-being.

Event: 17th International Sustainability Transitions Conference (IST 2026)
Date(s): 31 August – 2 September 2026
Location: Zurich
Website: https://www.transitionsnetwork.org/ist-2026/

IST 2026, hosted by the Cirus group at Eawag and the Group for Sustainability and Technology at ETH Zurich, is the flagship conference of the Sustainability Transitions Research Network. This year’s event will bring together researchers to discuss socio-technical transformations, environmental sustainability, and social justice. It will provide a platform for debate, knowledge exchange, and collaboration among international scholars working on sustainability transitions in various systems.

If there are any other events you think should be on our list, don’t hesitate to get in touch with us here.