A recently published JISC Briefing Paper entitled 'Using IT to Go Green' features work done at AU.
The briefing paper, which can be found at http://www.jisc.ac.uk/publications/briefingpapers/2011/goinggreen.aspx, discuss the PAWS (Power and Wake Project) as well as work done on videoconferencing.
You can find out more about PAWS at http://paws.aber.ac.uk/roller/
Details of the How Green was my Videoconference project can be found at www.wvn.ac.uk/greenict