Earth Hour 2007 was a Sydney event. Earth Hour 2008 is a global movement.
On 31 March 2007, 2.2 million people and 2100 Sydney businesses turned off their lights for one hour – Earth Hour. This massive collective effort reduced Sydney’s energy consumption by 10.2% for one hour, which is the equivalent effect of taking 48,000 cars off the road for one hour.
With Sydney icons like the Harbour Bridge and Opera House turning their lights off, and unique events such as weddings by candlelight, the world took notice. Inspired by the collective effort of millions of Sydneysiders, many major global cities are joining Earth Hour in 2008, turning a symbolic event into a global movement.
- Source: Earth Hour

Created to take a stand against the greatest threat our planet has ever faced, Earth Hour uses the simple action of turning off the lights for one hour to deliver a powerful message about the need for action on global warming.
This simple act has captured the hearts and minds of people all over the world. As a result, at 8pm on the 29 March, 2008 millions of people in some of the world’s major capital cities, including Copenhagen, Toronto, Chicago, Melbourne, Brisbane, Tel Aviv and Manila will unite and switch off for Earth Hour.
Beyond turning off your lights for one hour at 8pm on 29 March 2008, there are lots of things you can do to make Earth Hour 2008 an even greater success. Here are just a few to get you started.
- Sign up. Not only will you really feel part of it, but you’ll also receive lots of useful tips and tools.
- Tell a friend. Better still, tell all your friends, and your family, and your workmates. Just email them with a link to this website.
- Create your own Earth Hour (PDF) – learn how to organize Earth Hour in your town or local community.
- Advertise. If you’ve registered as a business, don’t be afraid to advertise your support for Earth Hour. It’s great for business and the environment!
- Support. If you’d like to take a more significant role in Earth Hour 2008, contact WWF to find out about support opportunities.
Watch this promo video (3 mins) for more information:
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Nice one, pelf! I’ll certainly be joining this one…
rinnah’s latest blog post: Not quite everything you wanted to know
It seems simple enough to do, kan?
Now I know there is something like that .. hehehe.. will join too
How come KL isn’t in ??
I’ll commit to this one, even if no one else in KL does it !
moz’s latest blog post: Trip Report: Zhouzhuang
Oh yeah, thanks for bringing the info. Just signed up. Now trying to spread the word about this meaningful event… =)
ColourfulWorld’s latest blog post: Donate Your Idle PC Time, You Can Contribute To The Scientific Community
Sounds like an excellent idea to me. Doing without lights for an hour can’t be that awful for anyone.
Franklin’s latest blog post: Fred Thompson quits Race
Exactly, Franklin! And if the entire population in Sydney could shut down for an hour and take 40,000 cars off the roads, I am sure a couple of nations could put even MORE cars off our roads!
Wow, I didn’t realise it was 10%. There wasn’t really a visual difference in the city. Pubs, clubs and office buildings still had their lights on. Why do office buildings leave their lights on all night? It seems silly to me.
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I’m definitely in! turned out the lights in the house for that 1 hour last year, it felt good