Water Usage Effectiveness (WUE)

A sustainability metric defined by The Green Grid, which is a measure of the water used on-site for data center operations including humidification and on-site evaporation for cooling or energy production. WUE is calculated by dividing ‘annual water usage’ by the ‘energy consumption of the IT computing equipment’ The units of WUE are liters/kilowatt-hour (L/kWh).