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This is a very cool idea, but when folks express power savings in units of kWh/year it makes my head spin. So...

100 kWh / year == 100,000 W / (years/hour) == 17.1 W.

so we save 17 W per computer. This is good, though less impressive-sounding.

Another way of looking at it is that a kWh of electricity costs something like $0.10. Saving 100 of those a year is ten bucks per computer. $10 per PC per year is nothing to sneeze at if you have a lot of computers.

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Absolutely! And 100 kWh /year is a very conservative estimate, almost pessimistic. Most of the studies claim savings in the range of 600 kWh - so 60$ per computer per year. For those who have the habit of keeping their PC on all night, savings would be much higher - more so for organizations with large networks.

Thanks. We're glad you like the concept.

We've laid emphasis on aggregate stats and huge figures as we want to tap into the sense of gratification that one gets from being part of a large and meaningful movement.

That being said, we understand that most folks on HN will analyze the data objectively and therefore we've been modest at best with our numbers.

PC Power Management is not a new concept. Giving it a social spin with a game, we believe, is.

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