NetworkWorld attended the Green Grid Technical forum and wrote an article titled, Wanted: Energy efficient standards for data centers.
The article has customer interviews from Allstate, ADP, Enterprise Rent-A-Car integrated, but I cant' tell if the interviews were done at the Green Grid Technical Forum, or they are from previous interviews. (Appended Feb 9, 2008, there were presentations by these companies at the Forum)
The only part I can find about the Forum is
A number of speakers at the Green Grid event said user education was the first challenge to greening their data centers. Educating internal users -- even IT staff such as application developers -- and computer component vendors of the need to focus on data center efficiency instead of raw speed and power were two such challenges.