Greenpeace's Black Pixel Campaign

Greenpeace Brazil has a simple proposition: let's save energy by annulling a square of 50x50 pixels of our computer screens (on CRT and plasma monitors). The campaign presentation is claiming that if one million people join, they can save up to 57 thousand watts an hour.

The project presentation refers to "one pixel" but is actually talking about a square of 50x50 pixels, which would make a 2500 pixels square. The calculation of 0.057 is for that square.

According to the project presentation, one installed black pixel will save 0.057 watts per hour, so if one million people join, it will make 57 thousand watts per hour. This is equivalent to 1425 40W light-bulbs turned off per hour and can save up to 70 kilogrames of CO2 (if the energy for that came from a coal plant). From the campaign they make it clear that this only works on CRT and plasma monitors.

How do you join? By downloading a light piece of software that places a black square in your monitor (which you can place wherever in the screen you want).




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