Google Energy Saver is a tool for Windows XP and Vista which is designed to help you save energy. It does this by turning on the Windows power settings on your machine and tweaking them to meet the standards recommended by the Environmental Protection Agency.
The tool also displays a running total of how much energy you have saved, along with a total for everyone using the tool. As well as simply displaying the raw figures, the tool gives real world examples, for example the number of bikes which the equivalent pedal power could carry through one stage of

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the Tour de France. Some users have complained that the units the tool uses are too big for individual users to get an accurate measure of their savings.