Media & Data
Intermediate

Power Usage Effectiveness (PUE)

How efficiently a data centre uses energy, versus overhead like cooling.

Formula

PUE=Total facility energyIT equipment energyPUE = \frac{\text{Total facility energy}}{\text{IT equipment energy}}

Variables

Total facility energyAll power drawn by the data centre
IT equipment energyPower used by the servers themselves

Example

1.5 MW total for 1 MW of IT → PUE = 1.5

Did You Know?

A perfect PUE is 1.0; modern hyperscale data centres reach around 1.1.

data-centreitenergyefficiency

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