A few months ago, TreeHugger Mark Ontkush wrote a post on his blog EcoIron titled Black Google Would Save 750 Megawatt-hours a Year. The post lays out the following train of thought. “An all white web page uses about 74 watts to display, while an all black page uses only 59 watts.” Google, which has a white background and gets about “200 million queries a day” could reduce global energy use by 750 Megawatt-hours a year by simply changing the color of its homepage to black. (For more detailed calculations and assumptions check out the original post here.)
In response to this post a black version of Google emerged called Blackle.com. According to Blackle’s homepage at publication time, 4,408.917 Watt hours have been saved by. The site encourages users to “make a difference today [by] … Blackling "energy saving tips" or visit[ing] treehugger.com a great blog dedicated to environmental awareness.” Nice ideas. But how does the search measure up? Very well indeed. Give it a whirl yourself and start saving energy one search at a time. :: Blackle.com
Source: http://www.treehugger.com/files/2007/05/black_google_sa.php
