In previous years, World Wildlife Fund for Nature's (WWF) global environment movement Earth Hour has seen the support from millions of people including models like Miranda Kerr and Nadya Hutagalung, actress Jessica Alba, former US vice president Al Gore, cricket legend Sachin Tendulkar, and British rock band Coldplay.
This year, it gets a different kind of celebrity endorser in the form of a superhero - Spider-Man.
In a first of its kind partnership, Spider-Man will be the first superhero ambassador for Earth Hour, with a message to inspire individuals to use their power to become Super Heroes for the planet.
This year, Earth Hour and the hero of the highly anticipated motion picture The Amazing Spider-Man 2 - along with the film's stars, Andrew Garfield, Emma Stone, Jamie Foxx and director Marc Webb - are throwing their support behind Earth Hour Blue, which aims to harness the power of the crowd to raise funds for on-the-ground environmental projects from across the world.
"I'm proud Spider-Man is the first Super Hero ambassador for Earth Hour because he shows we can all be Super Heroes when we realise the power we all have," says Andrew Garfield, who plays Spider-Man in the upcoming film.
"Earth Hour is a movement that has created massive impact around the world, so imagine what we can do this year with Spider-Man by our side."
The crowdfunding section of the new platform will allow participants to help deliver energy efficient stoves to families in Madagascar, help communities in the Philippines build fiberglass boats to withstand climate impacts like Typhoon Haiyan and raise funds to expand and conserve the iconic Table Mountain National Park in South Africa, with many more projects to come.
The Amazing Spider-Man 2 director Marc Webb is backing the Earth Hour Blue project which aims to provide better equipment for WWF Rangers protecting Indonesia's endangered wildlife such as the Sumatran Tiger, Elephant, Rhino and Orang utan and their forest habitat.
Ordinary people can also support Earth Hour Blue projects, which will call for people to add their voice to some of the biggest environmental campaigns across the world; including an Instagram campaign for people to share their love of Australia's Great Barrier Reef, as part of WWF-Australia's "Lights Out For The Reef" theme for Earth Hour 2014.
"The idea of Earth Hour has grown beyond anything we could have dreamed. This year with the help of Spider-Man by our side, we are taking the movement to the next stage. We hope that Spider-Man will empower individuals to be Super Heroes for the planet, and use their voice or their dollar to support projects or campaigns around the world. It's about harnessing the power of the crowd. That's what Earth Hour Blue is all about," said Ridley.
You can get involved and use your power at earthhour.org.