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


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.

Partners who support us

Relive the previous editions

4th edition – march 2023


energy sufficiency : challenge yourself to innovate

4th edition

Energy sufficiency : challenge yourself to innovate

3rd edition – march 2022


university of tomorrow

3rd edition

University of tomorrow 

2nd edition – October 2021


equality, diversity and inclusion

2nd edition
Equality, diversity and inclusion

1st edition – march 2021



1st edition