Citadella and other landmarks in Malta will be switched off next Saturday 25th between 8:30pm and 9:30pm which marks Earth Hour.

Earth Hour is a worldwide movement for the planet organized by the World Wide Fund for Nature (WWF). The event is held worldwide annually encouraging individuals, communities, households and businesses to turn off their non-essential lights for one hour.

The promoters of Earth Hour stated that Earth Hour does not purport to be an energy/carbon reduction exercise, it is a symbolic action. Therefore, we do not engage in the measurement of energy/carbon reduction levels for the hour itself. Earth Hour is an initiative to encourage individuals, businesses and governments around the world to take accountability for their ecological footprint and engage in dialogue and resource exchange that provides real solutions to our environmental challenges. Participation in Earth Hour symbolises a commitment to change beyond the hour

It was famously started as a lights-off event in Sydney, Australia in 2007. Since then it has grown to engage more than 7000 cities and towns worldwide. Today, Earth Hour engages a massive mainstream community on a broad range of environmental issues. The one-hour event continues to remain the key driver of the now larger movement.

Earth Hour 2008 received free publicity from the Google corporation. From 12:00 a.m. on March 29, 2008 until the end of Earth Hour, the Google homepage in the United States, Colombia, Canada, Denmark, Ireland and the UK was turned to a black background, with the tagline “We’ve turned the lights out. Now it’s your turn – Earth Hour.” However, Google stated that for 2009 they would not turn the page black again due to the confusion it caused many users. A common misconception is that having a black background on a web page reduces the power consumption of monitors; LCD monitors use a constant amount of power regardless of which colors are shown. This is not the case for organic LED monitors, though they are not currently in popular use.

Earth Hour has been supported around the world by Nelson Mandela, supermodel Miranda Kerr, cricket legend Sachin Tendulkar, footballer Lionel Messi, the United Nations Secretary General Ban Ki-moon, Greenpeace International Executive Director Kumi Naidoo, former US Vice President Al Gore, the President of Fiji Ratu Epeli Nailatikau, André Kuipers and the International Space Station, actress Isabel Lucas, TV stars Bill and Giuliana Rancic, Yoko Ono, Stephen Fry, Cate Blanchett, Coldplay, among many others.

In 2014, Earth Hour was supported by Sony Pictures and the cast of The Amazing Spider-Man 2, including actors Andrew Garfield, Emma Stone, Jamie Foxx and director Marc Webb. The cast put their support behind Earth Hour Blue crowdfunding projects, asking their fans to raise funds for on-the-ground environmental projects from across the world. Spider-Man and its cast and director also attended the WWF-Singapore Earth Hour event in 2014.

Actress and co-founder of The Honest Company, Jessica Alba, was the Earth Hour 2013 global ambassador. Supermodel Miranda Kerr served as global ambassador in 2011 and 2012, helping launch Earth Hour’s “I Will If You Will” platform.

Chinese actress Li Bingbing has been a longtime supporter of the campaign, attending WWF-China’s Earth Hour events each year. Supermodel Gisele Bündchen is also a longtime supporter of Earth Hour, taking to social media to encourage fans in Brazil and around the world to switch off.