Policies for Data Centre Energy Efficiency: Scope, Trends and Availability of Data
This report proposes a definition and characterisation of data centres, presents trends in their energy use, and analyses the availability of data which might be used as inputs to energy efficiency metrics.
Smart Lighting – New Features Impacting Energy Consumption
Smart lamps and luminaires are common in today’s lighting market. Smart lighting provides an opportunity for the consumer to benefit from wireless control of lighting products, e.g. by dimming, colour tuning and scheduling. These functions can provide energy saving but they also require energy consumption to supply standby power and gateways.
Mobile Device Efficiency
This report analyses the energy use of mobile devices, compares policies and identifies policy gaps.
Energy Efficiency Metrics for Data Centres
This study explores the existing metrics for data centre efficiency, and identifies which metric(s) might be suited for use by policy makers.
SSL Quality and Performance Requirements
The 4E SSL Annex has published its new and updated “quality and performance requirements” for the most popular LED lamps and luminaires.
Progressing Energy Efficiency Policies for Systems
Systems are described as the next frontier for energy efficiency policy, offering the potential to unlock huge energy savings in equipment-based energy-using systems.
In this summary we highlight some of the key findings from 4E’s investigations over several years.
4E PEET Status of Electric Motor Regulations 2022 (Updated December 2022)
Update of energy efficiency regulations and trends in 4E economies
4E PEET Status of Room Air Conditioner Regulations 2022
Update of energy efficiency regulations and trends in 4E economies
4E PEET Status of Television and Displays Regulations 2022
Update of energy efficiency policy measures and trends in 4E economies
4E PEET Status of Domestic Refrigerator Regulations 2022
Update of energy efficiency regulations and trends in 4E economies
Policy Brief – Small Network Equipment
Provides policy considerations for improving the energy efficiency of small network equipment such as modems, routers, network extenders, etc.
Interlaboratory Comparison for Goniophotometers (IC 2017)
The final report from the IEA 4E Solid State Lighting Annex’s 2017 Interlaboratory comparison (IC 2017). This comparison had 36 participating laboratories from 19 countries with a total of 42 goniophotometric instruments, the largest interlaboratory comparison of such equipment ever undertaken. This comparison investigated the level of agreement in measurements of SSL products by various […]
Data Centre and Server ‘Idle Coefficients’
This report presents information on novel data centre KPIs: the Server Idle coefficient and the Data Centre Idle Coefficient.
Policy Brief – Policy Guidance for Energy Smart Digital Devices
Provides policy guidance for encouraging the development of consumer devices which are capable of ‘energy smart digital functionality’
Small Network Equipment: Considerations for Energy Efficiency Policy
This report provides an overview of small network equipment (e.g. routers and modems), investigates options for policies and estimates the potential for energy savings.
Literature Summary of Lifetime Testing of Light Emitting Diodes and LED Products
A summary of the literature on lifetime definitions for LEDs and LED products, including a look at failure mechanisms, accelerated life tests and test methods for estimating lifetime, and provides some recommendations. There is currently no agreement as to which test method can best estimate the lifetime of LED lighting products and the report thus addresses a key issue for regulators and industry interested in deployment of LED technologies
Quality and Performance Requirements for LED Lighting Products – Public review Draft
Public review draft of the updated Quality and Performance Requirements for LED Lighting Products released 25 November 2020, for comment by 25 January 2021.
Energy Applications within IoT and Digitalisation Strategies
The purpose of this report is to provide guiding principles to policy makers for developing and implementing national/regional digitalisation and IoT strategies that emphasise energy
Policy Guidance for Smart, Energy-Saving Consumer Devices
This report provides considerations for policy makers to encourage ‘smart’ consumer devices which save energy and provide demand flexibility. It includes key findings for the prioritisation of consumer devices and policy recommendations.
Visual Perception under Energy-Efficient Light Sources – – Detection of the Stroboscopic Effect under Low Levels of SVM
Temporal light modulation (TLM, known colloquially as “flicker”) of light sources has visual, neurobiological, and performance and cognition effects on viewers.
