Google Efficiency Update: PUE of 1.22

Data Center Knowledge (Oct 15 2009) Power and Cooling

1. Google’s latest quarterly update of the energy efficiency of its data centers showed a slight uptick from the previous quarter, but improvement from the same period last year. The company publishes its efficiency data using Power Usage Effectiveness (PUE), the leading metric for “green” data centers. “Overall, our fleet QoQ results were as expected,” Google reported. “The Q3 total quarterly energy-weighted average PUE of 1.22 was higher than the Q2 result of 1.20 due to expected seasonal effects. The trailing twelve-month (TTM) energy-weighted average PUE remained constant at 1.19. YoY performance improved from facility tuning and continued application of best practices. The quarterly energy-weighted average PUE improved from 1.23 in Q3′08, and the TTM PUE improved from 1.21.” (Read Full Article)

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