[m0llusk]

This is great progress, but there are still some significant low hanging fruit to consider. For example, the power it takes to display the all white background of the search and other top Google pages is significant. Changing that to black or partly black or some darker color could save amounts of energy that are hard to calculate and represent draw from all over the network.

[bhhaskin]

The largest power drain in an LCD/LED screen is the backlight and that has to be running regardless of which color is being displayed. This would only benefit OLED screen (which doesn't have a normal backlight) which are pretty much only used on high-end phones and TVs. Unlikely to make a significant impact in energy use, and furthermore any amount of energy savings would likely be lost in the extra amount of black ink needed to print out pages.

[asdgkknio]

Not on an LCD. The backlight is always on, even if the screen is black.

I wonder how much power the 50 pounds of JS on Youtube costs.