Blackle saves energy because the screen is predominantly black. “Image displayed is primarily a function of the user’s color settings and desktop graphics, as well as the color and size of open application windows; a given monitor requires more power to display a white (or light) screen than a black (or dark) screen.” Roberson et al, 2002.
We believe that there is value in the concept because even if the energy savings are small, they all add up.
Secondly we feel that seeing Blackle every time we load our web browser reminds us that we need to keep taking small steps to save energy.
Help us spread the word about Blackle by telling your friends and family to set it as their home page.