What is Earth Hour?

WWF’s Earth Hour is an annual global celebration where people switch off their lights for one hour to show they care about the future of our planet.

This year’s celebrations will be on Saturday 19 March from 8.30pm to 9.30pm. To take part, all you need to do is sign up and switch off your lights for that one hour.

It’s a symbolic and spectacular lights out display with a big message – we want to protect the future of our planet!

Buckingham Palace switches off for Earth Hour

Since it first began in Sydney Australia in 2007, the number of countries taking part in Earth Hour has grown to an incredible 172 countries and territories – a number that keeps rising every year!

Earth Hour is not about how much energy is saved during the hour. Rather, it’s a chance to put the spotlight on the issues facing the planet, and to inspire millions across the world to live more sustainably.

Count me in!

Celebrate with a special candlelit dinner!

WWF’s Earth Hour is all about people coming together to celebrate our brilliant planet. So why not spend the evening with your family, friends or a loved one having a candlelit dinner that you know is good for you and for the planet too?

With celebrity chefs including Valentine Warner and Rachel de Thample on-board, you should have all the inspiration you need to cook up a treat! We have some fantastic Earth Hour recipes or have a go at creating your own sustainable tasty dishes based on WWF’s 6 Livewell principles.

See our sustainable recipes
A perfect way to spend the hour is with a candlelit dinner, and it's a great opportunity to raise some money for WWF as well!

A brief history of Earth Hour


In the UK, 10.4 million people joined a record 172 countries and territories across the world who celebrated Earth Hour to show they care about our brilliant planet.

© Doru Oprisan

A record 162 countries took part in Earth Hour 2014, showing a phenomenal amount of support from the UK, to Australia, Uruguay and Russia.

© Vlad Barin / WWF-UK

60 special Earth Hour pandas named by WWF-UK supporters were unleashed across the UK to help spread the message about Earth Hour. #Passthepanda selfies popped up all across social media and even celebrities like Stephen Fry, Eliza Doolittle and Jack Whitehall shared their photos.
We launched a Poster Design competition for young creatives, asking them to design an inspirational poster for Earth Hour which would feature in the ’29 Posters for the Planet’ collection. The winning poster was featured on billboards across the UK inspiring people to take part in Earth Hour.
On the day, dancing pandas took to the streets of London’s Southbank to celebrate Earth Hour and #passthepanda. In the evening we had an exclusive performance from Sophie Ellis Bextor and we live-streamed Big Ben’s switch off with the help of Dougie from McFly.

Some of the key landmarks that took part are: Sydney Harbour Bridge and Opera House, Table Mountain, The Eiffel Tower, Buckingham Palace, Times Square and even the International Space Station!
10 million people in the UK and 157 countries took part in one of the world’s greatest mass participation event.
Our Hidden Heroes competition searched for those individuals who go above and beyond to do their bit and inspire those around them to live sustainably. The winners were presented their awards by Graeme Le Saux at our on the night event at the Southbank centre.
Our on the night event featured an exclusive performance from Earth Hour Ambassadors McFly.

7.6 million people in the UK took part in Earth Hour 2012, joining 3,500 schools and more than 1,200 businesses and organisations.
On the night itself, singer and Earth Hour ambassador KT Tunstall launched the night with an exclusive acoustic gig in Westfield London.
In London, a human powered dance floor lit up Somerset House, where pop band The Luminites and street dance troupe Flawless, stars of Britain’s Got Talent and film StreetDance 2, counted down to the switch off and performed a twilight routine.
For Earth Hour 2011 in London, television presenter Kirsty Gallacher led a team of 60 cyclists in one of the largest human-powered projections ever attempted to light up The Royal Albert Hall with images of endangered species including dolphins and tigers.
A record 128 countries and territories take part and iconic buildings and landmarks from Asia Pacific to Europe and Africa to the Americas stand in darkness.
WWF partners up with Earth Hour to help create one of the world’s biggest celebrations for our brilliant planet. Hundreds of millions of people in more than 4,000 cities and towns across 88 countries switched off their lights for one hour to show they want action on climate change.
The word has spread and the UK gets involved in Earth Hour for the first time, alongside 371 cities and towns in more than 35 countries.
The first ever Earth Hour started in Sydney, Australia.

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