It's not too late to sign up for WWF's Earth Hour

You can still be part of something brilliant. Sign up and join millions of people who care about a bright future for our planet.

To sign up as a school, please use our schools sign up form

To sign up as a business, please use this form.

To sign up as an organisation, please use this form.



By providing your email address, you'll be agreeing to receive emails from us - we won't share your details and you can unsubscribe at any time.

Outside of UK/Ireland? Sign up here


If you provide your mobile we'll send you special Earth Hour content, text reminders and contact you to tell you more about our work. You can opt out at any time.