White paperCitation
The Green Grid 2014
WP#62 - Data Center Environmental Impacts
In a sustainability scorecard, group indicators into impact categories.
- Dated 11 December 2014.
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White paperCitation
The Green Grid 2015
WP#63 - Free Power Quality
Offer a reduced-conversion topology scenario.
- Dated 13 March 2015.
White paperCitation
The Green Grid 2015
WP#64 - Data Center Segmentation: Workload Archetypes
At project setup, let users tag a facility with a workload archetype (for example HPC/AI, enterprise, cloud, storage).
- Dated 20 May 2015; author Henry M. Wong (Intel).
White paperCitation
The Green Grid 2015
WP#65 - Data Center Airflow Management Calculators
In the airflow advisor, estimate fan and chiller savings from containment and blanking (bypass and recirculation reduction).
- US data centre electricity use is cited at roughly 2% of national consumption.
White paperCitation
The Green Grid 2016
WP#67 - Modern Assessment of the Susceptibility of Data Center ICT Equipment to Power Outages and Disturbances
Store PSU ride-through (ms) as a catalog field for IT equipment.
- The paper is dated 30 March 2016.
White paperCitation
The Green Grid 2016
WP#68 - The Performance Indicator: Assessing and Visualizing Data Center Cooling Performance
In airflow/CFD results, report thermal conformance (share of IT inlets within the recommended range) alongside PUE.
- Dated 22 June 2016; editors include Mark Seymour (Future Facilities).
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White paperCitation
The Green Grid 2016
WP#69 - The Importance of Ride-through Testing Data
Catalog the ride-through time per PSU.
- Dated 15 November 2016.
White paperCitation
The Green Grid 2016
WP#70 - Liquid Cooling Technology Update
In the liquid cooling module, use consistent boundary terms (FWS/TCS loops, CDU).
- Related document: ASHRAE TC 9.9 Liquid Cooling Guidelines.
White paperCitation
The Green Grid 2016
WP#71 - Open Standard for Datacenter Availability (OSDA)
In the reliability module, alongside Tier/EN 50600 classes, offer an availability-based rating that credits on-site renewables and alternative topologies.
- Related standards: EN 50600-1 and the Uptime Tier Standard.
White paperCitation
The Green Grid 2017
WP#72 - ICT Capacity and Utilization Metrics
Add an optional IT-capacity panel: store compute, storage and network capacity and average utilisation per hall.
- Dated 23 January 2017; the initiative started in early 2015.
White paperCitation
The Green Grid 2017
WP#73 - Fluid Connector Best Practices for Liquid-Cooled Data Centers
Add catalog fields for quick disconnects: Cv or pressure drop at flow, drip volume per disconnect and filtration (micron) requirement.
- The paper is dated 11 May 2017, edited by David Vranish (CPC), Chris Chapman and Tahir Cader (HPE).
White paperCitation
The Green Grid 2017
WP#74 - Solving the Costly Zombie Server Problem
In IT load planning, allow an unused-server fraction.
- The paper is dated 1 August 2017.
White paperCitation
The Green Grid 2017
WP#75 - Server Energy Efficiency in Data Centers and Offices
In the server catalogue, store the SERT active-efficiency score together with idle power.
- Dated 7 November 2017; editor Jay Dietrich (IBM).
White paperCitation
The Green Grid 2017
WP#76 - Power Metrics for ITE
In capacity planning, track ITE power utilisation (actual versus provisioned) per rack and hall.
- Dated 21 December 2017; work item WI #17-002.
White paperCitation
The Green Grid 2018
WP#78 - An Introduction to Coolant Distribution Units
In the CDU catalog, hold capacity (kW) at approach temperature, flow, pump head and redundancy.
- Dated 17 December 2018; editor Jason Zeiler (CoolIT); download restricted to members.
White paperCitation
The Green Grid 2019
WP#79 - Data Center Automation with a DCIM System
Export: provide asset/topology exports (racks, power chain, sensors) in a DCIM-ready format so designs can seed staged DCIM deployment.
- Dated 3 January 2019; member download.
White paperCitation
The Green Grid 2020
WP#82 - Operating Condition Class of Server Products
In the server catalogue, store the declared operating condition class (A1-A4).
- Dated 16 October 2020.
White paperCitation
The Green Grid 2021
WP#84 - Trade-offs of Processor Power Management Functions of Servers
In the IT load profile, provide an idle/low-utilisation power factor that depends on whether CPU power management is enabled.
- Dated 28 April 2021.
White paperCitation
The Green Grid 2022
WP#85 - 230V Enterprise PSU Market-Ready Efficiency Study
For EU sites, default server PSU efficiency to the Lot 9 (Regulation (EU) 2019/424) minimum.
- Scope is 230 V enterprise power supply units.
White paperCitation
The Green Grid 2022
WP#86 - Energy Efficient Data Center Storage: An Assessment of Storage Product Power Efficiency
In the storage catalog, capture power per capacity or performance from SNIA Emerald-style test data rather than nameplate.
- Dated 13 July 2022; replaces WP#77.
White paperCitation
The Green Grid 2023
WP#89 - 480/277V AC-DC Power Supplies: A Study of Emerging Trends
Add a 480Y/277 V-to-rack option with 277 V PSUs and no PDU transformer to the electrical topology library.
- Related references: NEC (NFPA 70), OCP Open Rack; registration required.
White paperCitation
The Green Grid 2023
WP#90 - Assessment of the Use of SPEC SERT Suite Measured Data to Create a Data Center Work per Energy Metric
For EED reporting, prepare to compute work capacity from SERT-derived values (see WP#94).
- The white paper is dated 29 August 2023.
RegulationCitation
The Green Grid 2024
WP#92 - TGG's Position on the Metric to Calculate ICT Server Capacity (Cserv) Under the EU EED Delegated Regulation (2024/1364)
In the EED reporting export, include a Cserv field computed from PerfCPU per server SKU.
- Context: EU EED Delegated Regulation 2024/1364.
White paperCitation
The Green Grid 2025
WP#94 - IT Work Capacity (ITWC) v1 Metric - A Methodology
In the server catalogue, add CPU SKU and PerfCPU fields.
- Dated 27 March 2025; prepared by The Green Grid ITE Metrics Work Group.
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