Overview
ISO/IEC 30134-2:2016/Amd 1:2018 is an important international standard for data centres, specifically addressing key performance indicators (KPIs) related to Power Usage Effectiveness (PUE). This amendment refines the measurement and calculation methods for PUE, a critical metric used worldwide to evaluate the energy efficiency of data centres. The standard is published jointly by ISO (International Organization for Standardization) and IEC (International Electrotechnical Commission), ensuring harmonized global practices in data centre energy management.
Key Topics
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Power Usage Effectiveness (PUE):
PUE remains the primary KPI covered, defining the ratio of total energy consumed by a data centre to the energy used by IT equipment alone.
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Energy Metering Requirements:
The amendment details how to accurately measure total data centre energy consumption, including:
- Electricity
- Gaseous and fluid fuels (converted into electrical equivalent/kWh)
- Cooling fluids (measured via heat meters)
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Exclusions in Energy Metering:
Certain forms of energy like air used for cooling or naturally sourced water that does not consume energy are explicitly excluded.
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Mixed-Use Buildings:
Guidelines clarify how to account for PUE in data centres located in mixed-use buildings, emphasizing the need for separate metering of shared technical subsystems to accurately allocate energy use.
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Measurement Points for IT Load:
Specifies measuring IT load at the output of Power Distribution Units (PDUs), with guidance on meter placement including after transformers.
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Conversion Factors for Fuels:
Includes default heat of combustion values for common fuels such as diesel, gas, hydrogen, and bioethanol to convert fuel use into kWh equivalents.
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Cogeneration and Specialized Cooling:
Provides examples and methodologies for calculating PUE when cogeneration systems or absorption-type chillers are part of the energy supply mix.
Applications
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Data Centre Energy Efficiency Management:
Enables operators and sustainability managers to accurately assess and benchmark energy efficiency, driving targeted improvements.
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Sustainable IT Operations:
Supports initiatives to reduce carbon footprint by providing a standardized approach to monitoring energy consumption and identifying inefficiencies.
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Regulatory Compliance and Reporting:
Helps meet regional or international requirements on energy transparency and environmental reporting for data centres.
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Design and Engineering of Data Centres:
Architects and engineers use the standard to guide energy metering infrastructure and system design, ensuring that energy flows are properly accounted.
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Energy Procurement Strategy:
Facilitates comprehensive energy accounting for consumption involving multiple energy sources such as electricity, natural gas, and chilled water.
Related Standards
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ISO/IEC 30134-1: Overview of key performance indicators for data centres, providing foundational concepts related to PUE.
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ISO/IEC 30134-3: Focuses on other critical KPIs including Cooling System Efficiency (CSE) and Water Usage Effectiveness (WUE).
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ISO/IEC 30134-5: Addresses the KPI for Data Centre Infrastructure Efficiency (DCiE), complementing PUE measurements.
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ISO/IEC 30121: Offers guidelines for data centre facility management and sustainability practices.
These related standards form a comprehensive framework supporting data centre energy performance measurement, environmental impact reduction, and sustainable operation.
Keywords: ISO/IEC 30134-2 amendment, Power Usage Effectiveness (PUE), data centre energy efficiency, energy metering in data centres, data centre sustainability, data centre KPIs, mixed-use building energy accounting, cogeneration in data centres, IT load measurement, energy consumption metrics.