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Guide › Glossary › CUE

CUE · Carbon Usage Effectiveness

Kilograms of CO2-equivalent emitted per kWh of IT energy; the carbon companion to PUE.

Current numbers

Parts 2/3/6/8/9ISO/IEC 30134 KPIs: PUE, REF, ERF, CUE, WUE (Part 4 ITEEsv for server efficiency)as of 2026 · register ↗

Related terms: PUE

Where the guide uses this

15.1
Efficiency Metrics: PUE, WUE, ERF, REF & the Post-PUE Metric Stack
E
Glossary, Phase-Gate Timeline & Learning/Community Map
0.4
The Standards & Specifications Landscape (Living Index)
0.3
Vocabulary, Mental Models & the Metric Stack
15.7
Regulation, Reporting & Disclosure Frameworks
15.6
Embodied Carbon & Circularity Across the Lifecycle

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