What are the World Sustainable Energy Days

Energy transition now – fast, smart, resilient!

No time like now for the energy transition! Price fluctuations, geopolitical instabilities and the climate crisis make the importance of the energy transition evident. A strong push in all sectors is critical in delivering energy security and sustainability. The 2024 World Sustainable Energy Days will show how to realise the high policy ambitions of the upcoming EU legislation and how to strengthen the clean energy markets.

The World Sustainable Energy Days (WSED) are a leading annual conference on the energy transition and climate neutrality with over 650 participants from more than 60 countries.

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Interested in attending? Download the First Announcements!


Please keep me informed about the World Sustainable Energy Days!

With the World Sustainable Energy Days, Upper Austria – a leader in the energy transition – is the meeting place for sustainable energy. Europe has set itself the ambitious target of becoming the first climate-neutral continent. We present and discuss solutions to practically implement the energy transition quickly. With energy efficiency and renewable energy, we will ensure competitiveness and decrease energy costs!

Markus Achleitner, Regional Minister for Economy and Energy, Upper Austria


Our Speakers

More than 100 experts share their work, projects, research results, achievements, ideas and insights with the worldwide sustainable energy community:

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Our audience - the whole energy transition sector!

A wide range of business actors engaged in the energy transition:

  • technology and equipment companies, energy companies, service providers, planners, developers, financing community etc.
  • the sustainable energy research community
  • representatives from public bodies (e.g. EU institutions, national, regional and local governments, energy agencies)

The World Sustainable Energy Days attract over 650 experts from over 60 countries!​​​​​


What do we offer? 

Conference Review: These were the ...

WSED 2023​​​​​

WSED 2022​​​​​


Review International Clean Energy Challenge

​​​​​​​​​​​​​​An event for young professionals
24 - 28 July 2023, Upper Austria



Tradeshow "WeBuild - Energiesparmesse"

​​​​​​​Leading tradeshow on renewable energy and energy efficiency
6 - 10 March 2024




The conference organiser: OÖ Energiesparverband

​​​​​​​The OÖ Energiesparverband (ESV) is the energy agency of Upper Austria. The agency, which was established by the regional government, drives the energy transition by promoting energy efficiency, renewable energy and innovative energy technologies. It provides comprehensive services to private households, businesses of all sizes and municipalities. It also supports energy technology companies in the context of the Cleantech-Cluster.




Energy Leaders from Upper Austria

A spotlight on the energy transition​​​​​​​
Successful projects and programmes that contribute to Upper Austria's leading role in the energy transition