Chris Malone has a presentation at Uptime Symposium that DataCenterKnowledge covers Google's Data Center PUE status.

Google: No ‘Secret Sauce’ in Recipe for Efficiency
May 11th, 2011 : Rich Miller

A chart showing onoging improvement in Power Usage Effectiveness in data centers at Google.

Chris Malone didn’t come to the Uptime Symposium to reveal Google’s stealthy strategies to make its data centers super-efficient. Instead, Malone’s message was that no state secrets are required to make your facilities much more efficient – although perhaps not quite as efficient as Google’s highly-customized infrastructure.

There are ten data centers reported on starting 4 years ago. Yet, many data center novices are more aware of Yahoo's chicken coop and Facebook's Open Computer Data center., and think of these first data center build out as state of the art.

Yahoo’s Chicken Coop-Inspired Green Data Center

By Katie Fehrenbacher Sep. 19, 2010, 9:00pm PT Comments Off

Design inspiration can come from unusual places — for Yahoo and its data center design team, it was chicken coops, which utilize outside air and can reduce cooling power and costs. On Monday, Yahoo announced that the first data center to mimic this fine-feathered design has been built, commissioned and is up and running in Lockport, New York.

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Facebook Open Sources Its Servers and Data Centers

By Stacey Higginbotham Apr. 7, 2011, 10:05am PT 20 Comments

Facebook has shared the nitty-gritty details of its server and data center design, taking its commitment to openness to a new level for the industry by sharing its infrastructure secrets much like it has shared its software code. The effort by the social network will bring web scale computing to the masses and is a boon for AMD and Intel and the x86 architecture.Sorry ARM.

Google is going to have its data center event in Zurich on May 24. We'll see perception changes after Google's data center summit.

European Data Centre Summit 2011

Improving the energy efficiency of your data centre is a critical part of business best practices, ensuring the reduction of both your organisation's total energy consumption and its environmental impact.

The financial gains are potentially huge for infrastructures at any scale; whether you run a facility of a few hundred kWs or a multi-MW data centre, there are immediate steps you can take to deliver rapid environmental and economic returns.