About M'illumino di Meno

M’illumino di Meno is a radio campaign to raise awareness about energy saving and sustainable lifestyles. It has been promoted by Rai Radio2 with its popular afternoon drive-time show Caterpillar since 16 February 2005, when the Kyoto Protocol came into force.

Over the years, M’illumino di Meno has inspired thousands of people to take action to save the Planet in their daily life: choosing circular economy, favoring clean mobility, switching to renewables, supporting reforestation…

As a result of this mass mobilization, the Italian Parliament has designated 16 February as the National Day of Energy Saving and Sustainable Lifestyles.

Rai Radio2 with Caterpillar celebrates the Day by bringing together all those who care about the future of the Planet and want to show their environmental commitment.

The core principles of M'illumino di Meno

Environmental education

Environmental education

Raising environmental awareness through sustainability storytelling.



Building up a community sharing good environmental practices.



Encouraging firsthand involvement in sustainable initiatives.

Who can participate?

Everyone is invited to celebrate the National Day of Energy Saving and Sustainable Lifestyles: turn off the lights, have a candlelit dinner, go by bike, get planting!
Everyone can join the community of M’illumino di Meno at any time by sharing their own sustainability story.

History of M'illumino di Meno

On 16 February 2005, the day the Kyoto Protocol entered into force, Caterpillar came up with the idea to ask the audience to turn off the lights for a while as a statement of environmental concern.

Hence the name: M’illumino di Meno literally means “I light myself less” being a pun with Giuseppe Ungaretti’s famous poem “Mattina” (“Morning”), which, in its entirety, says “M’illumino d’immenso” (“Immensity fills me with light”).

Over the years, M’illumino di Meno has developed into an all-round campaign dealing with the news about global warming and climate change and promoting good environmental practices to cut pollution and optimize resources.

The wide success of the initiative prompted the Italian Parliament to declare 16 February the National Day of Energy Saving and Sustainable Lifestyles.

On the Day, Italian public authorities join M’illumino di Meno and simultaneously turn off the lights on the main squares and monuments, including the Colosseum in Rome, St Mark's Square in Venice and the Leaning Tower of Pisa. In past years some European icons, such as the Eiffel Tower in Paris and Trafalgar Square in London, as well as the European Parliament, also turned off their lights.

Explore the evolution of M’illumino di Meno in our timeline.
Immagine di February 16, 2024
February 16, 2024

For the 20th anniversary of M'illumino di Meno, Caterpillar also airs on TV on Rai2 for the first time.

Immagine di February 13, 2024
February 13, 2024

On World Radio Day, Caterpillar is broadcast live from the European Parliament in Brussels: M'illumino di Meno spreads to Europe.

Immagine di January 26, 2024
January 26, 2024

Caterpillar launches the 20th edition of M'illumino di Meno with a special episode live from the Accademia dei Lincei.

Immagine di February 16, 2023
February 16, 2023

Caterpillar is broadcast live from Palazzo del Quirinale, the official residence of the President of the Italian Republic.

Immagine di April 27, 2022
April 27, 2022

The Italian Parliament designates 16 February as the National Day of Energy Saving and Sustainable Lifestyles (Law 34/2022).

Immagine di 2022

M'illumino di Meno supports schools in planting trees in their gardens in collaboration with the Arma dei Carabinieri.

Immagine di 2021

We must undertake the ecological transition to come out of the COVID-19 pandemic as a better species: this is our "Species Jump".

Immagine di 2017

M'illumino di Meno is awarded the Medal of the President of the Italian Republic for the first time.

Immagine di 2016

M'illumino di Meno launches "Bike The Nobel" to nominate the bicycle for the Nobel Peace Prize.

Immagine di 2015

Italian astronaut Samantha Cristoforetti takes a picture of Italy switching off the lights from the International Space Station.

Immagine di 2014

Museums from all over Europe join M'illumino di Meno. Among others, the National Gallery in London.

Immagine di 2011

It is the 150th anniversary of the Unification of Italy: Caterpillar summons 150 mayors who commit themselves to sustainability.

Immagine di 2008

The Eiffel Tower, the Vienna Ferris Wheel, Trafalgar Square, Edinburgh Castle and many other European monuments turn off the lights.

Immagine di 2007

Italian symbols such as the Colosseum, the Leaning Tower of Pisa and St Mark's Square in Venice turn off the lights for the first time.

Immagine di February 16, 2005
February 16, 2005

The Kyoto Protocol comes into force. Caterpillar asks listeners to turn off the lights: M'illumino di Meno is born.

Press Kit

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Download the press kit and share the campaign with your network.