5th edition on March 18th and 20th, 2024

Changing your behavior can be difficult. During 48 hours you will find solutions to facilitate, promote and sustain this change.

What challenge will you take on ?

Challenge #1 – Adopt an exclusively vegan diet

Challenge #2 – Travel only by bike or on foot

Challenge #3 – Buy only local and seasonal products

Challenge #4 – Reuse objects to give them a new life

Challenge #5 – Take only cold showers

Challenge #6 – Find an alternative to using your fridge

Challenge #7 – Adopt the zero waste lifestyle

You have the possibility to propose your own challenge related to energy sufficiency


5th edition on March 18th and 20th, 2024

Challenge yourself and become your own subject of experimentation

Are you a student at UNIL or EPFL ? Do you like to challenge yourself while contributing to a better world ? Do you want to have an impact and find concrete solutions to sustain a change in behavior ? Take up the challenge of energy sufficiency and take action.

A program combining personal challenge and creativity to find sustainable solutions

During 48 hours in interdisciplinary teams, supported by coaches, you will be able to experiment a challenge related to energy sobriety, understand the blockages and benefits and find concrete solutions. You can come with your own challenge or choose your own.

The opportunity to win a prize worth CHF 5’000.- 

At the end of the challenge, you will have the opportunity to present your idea to a jury and win a prize worth CHF 5’000 to help you make it sustainable (coaching & cash). This prize is offered by Romande Energie, an actor committed to the decarbonization of French-speaking Switzerland.

Registrations for the 5th edition will open in February 2024

Registrations in French & English are welcome. Presentations by our speakers will be in French and the slides in English. Coaching sessions & the final presentation can be in your language of preference. If you have any questions, please contact us at

Partners who support us

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