“Green” Database Administration

CPU usage is easily understood, when CPU goes high, more power will be consumed, I am thinking if I can reduce CPU by average 1% per day, I probably can save at least 1 Wattage /hr * 24 hr / day * 365 day = 8760 W / year. From a world perspective, say we have 1 million sql server boxes, then we can save about 9 million kW power per year, that does not seem too small.

by (http://www.sqlservercentral.com/blogs/jeffrey_yao/2012/06/04/green-database-administration/)