PUE - Power Utilisation Effectiveness
Recently we have seen the emergence of P.U.E. as the pre-dominant measure of data-centre efficiency. The Green Grid (recognised as the UK and increasingly global authority on resource efficiency in information technology and data centres www.thegreengrid.org), US Department of Energy, Japan’s Ministry of Economy, the EU Code of Conduct on Data Centres amongst many others have named P.U.E. as the industry's preferred energy efficiency metric.