Power usage effectiveness

Power usage effectiveness (PUE) or power unit efficiency is a ratio that describes how efficiently a computer <a href="/facts/Data_center/DS5wJY41">data center</a> uses energy; specifically, how much energy is used by the computing equipment (in contrast <a href="/facts/Computer_cooling/nG6gYYcm">to cooling</a> and other overhead that supports the equipment).
PUE is the ratio of the total amount of energy used by a computer <a href="/facts/Data_center/DS5wJY41">data center</a> facility[excessive citations] to the <a href="/facts/Electric_energy/V0pJUrDY">energy</a> delivered to computing equipment. PUE is the <a href="/facts/Multiplicative_inverse/yczdYyCw">inverse</a> of <a href="/facts/Data_center_infrastructure_efficiency/01s7rG4q">data center infrastructure efficiency</a>.
PUE was originally developed by a <a href="/facts/Consortium/uMGVbLps">consortium</a> called <a href="/facts/The_Green_Grid/Wo70AfGf">The Green Grid</a>. PUE was published in 2016 as a global standard under ISO/IEC 30134-2:2016
An ideal PUE is 1.0. Anything that isn't considered a computing device in a data center (e.g. lighting, cooling, etc.) falls into the category of facility energy consumption.

P
          U
          E
        
        =
        
          
            
              
                Total Facility Energy
              
            
            
              
                IT Equipment Energy
              
            
          
        
        =
        1
        +
        
          
            
              
                Non IT Facility Energy
              
            
            
              
                IT Equipment Energy
              
            
          
        
      
    
    {\displaystyle \mathrm {PUE} ={{\mbox{Total Facility Energy}} \over {\mbox{IT Equipment Energy}}}=1+{{\mbox{Non IT Facility Energy}} \over {\mbox{IT Equipment Energy}}}}

Power usage effectiveness open-in-new

Power usage effectiveness