WUE · Water Usage Effectiveness
Liters of water consumed per kWh of IT energy; the water analog of PUE that evaporative cooling worsens.
Current numbers
500 kWEED Article 12 reporting threshold; PUE+WUE+ERF+REF filed annually by 15 May to the EU database
Parts 2/3/6/8/9ISO/IEC 30134 KPIs: PUE, REF, ERF, CUE, WUE (Part 4 ITEEsv for server efficiency)
9 partsISO/IEC 30134 KPI family in active use (PUE, REF, ITEEsv, ITEUsv, ERF, CER, CUE, WUE + overview)