Climathon Sion

23 Apr 2021 - 24 Apr 2021

Registration closed

Time for change, be the change. Join Climathon Sion, Valais !

Climate impacts are touching every part of the globe - but you know the climate challenges your community is facing the best.

Climathon is a global movement that organises locally; a city-based programme that offers a clear pathway to climate action.

Come and join the movement on April 23 and 24, 2021 - This event will take place 100% online!

At the core of the Climathon programme is a yearly ideathon that takes place in your city and in hundreds of other cities across many continents and time-zones.

Come and join a diverse group of participants, ranging from policymakers to hackers, youth to academics, students to business leaders. Together you will come to collaborate on forward-thinking ideas that tackle local climate challenges.

Take part and join a global community of thousands who want to act now, and rethink the cities we live in and the future we want as citizens.  

Ready for a unique experience? Get your chance to have an impact by taking on one of the climate challenges provided by our Partners that will be released soon : 

  • Challenge 1 : Sion - Sierre: developing a sustainable and carbon-neutral agglomeration in 2050
  • Challenge 2 : Encouraging and helping tenants to accelerate their energy transition
  • Challenge 3 : Discovering Valais agriculture and its products through leisure activities


#Climathon #ClimathonSion #timeforchange #bethechange

* An ideathon is a creative process of production, development and communication of new ideas.

Global Climathon: Facts & Figures

145 cities

Uniting the world's cities

6000+ participants

Join a global movement

600+ ideas

Make your local idea count

This years Climathon Sion, Valais

Climathon Sion

23-23 April 2021

23 Apr 2021 - 24 Apr 2021

100% online

Registration closed

23-23 April 2021

23 Apr 2021 - 24 Apr 2021

100% online

Registration closed
Header Climathon2020 1540X866

Upload your Climathon idea

Share your team's idea with the world.
Submit your idea

Upload your Climathon idea

Share your team's idea with the world.
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Thank you for your idea

Thank you for submitting your idea. It will be reviewed by the Climathon organiser in your city. Once approved you will see it on the website of your city.

By submitting your idea you consent to Climathon's Terms and Conditions.

Meet the organisers


eqlosion’s mission is to accelerate the transition towards sustainable development. We support you, private organisations, public entities and territories in your ecological transition.

As passionate entrepreneurs, we know that it takes a lot of energy and motivation to create and develop sustainable projects. We are not afraid to take risks, to explore new ideas.

Utopia International Association

Utopia International is a non-profit association that inspires and activates the ecological and societal transition among students, young people and citizens, through the creation of "Ecohubs" or poles of impulse. At Utopia we think global and act local.


Contact the organiser
Contact the organiser

Frequently Asked Questions

Covid-19, what arrangements have been made?

Due to the Covid-19 situation, Climathon Sion will take place 100% online. Don't be afraid, we did it in Geneva in November 2020 and in Lausanne in 2021 and it was a great success!

What is a Climathon?

A Climathon is a one-time ideathon type event during which individuals come together to solve problems collectively and creatively.

The solutions developed during the Climathon Sion do not necessarily have to include digital technology.

For more information on what an ideathon is (in French):

Do I have to pay to register?

No, Climathon is a free programme/event. However applications are reviewed to ensure that Climathon Sion participants are motivated and creative.

How long does the Climathon last?

Climathon Sion will start on Friday, April 23, 2021 at 13:00 and will end on Saturday, April 24 at 16:30 pm with the pitches presentation in front of the jury and a closing ceremony.

Please see the programme online

How will the teams be formed?

Teams will consist of 4 to 6 people. You can register as a team, but if you register alone, don't worry, teams will be formed at the beginning of the Climathon.

What about my intellectual property rights on the solutions I propose during the Climathon?

  • We respect your intellectual property rights and we expect you to respect the intellectual property rights of other participants. You are not allowed to copy the ideas and solutions proposed by other teams during the Climathon.
  • All intellectual property rights created during the Climathon belong to the creating team. However all participants will make publicly available a brief description of their idea and solution. To make sure that Climate-KIC and organizers are able to publicise these ideas and solutions, you allow them to use ideas and solutions for publications about the Climathon (through website, LinkedIn, Facebook, etc.).
  • We strongly encourage you to push your idea and solution after the Climathon but be aware that it may be also be exploited/pushed by any interested person after the Climathon.
  • We encourage you to share your Climathon experiences on social media using #ClimathonRomandie #ClimathonSion #Climathon

Want the global view?

Climathon global

Thanks to our global partners