Emerging Battery Technologies
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This research study examines new battery technologies suited to powering small devices such as IoT, actuators and sensors, and portable devices such as mobile phones and laptops.
Round Robin of Converter Losses
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This report summarises the results of the IEA 4E EMSA international Round Robin testing programme for converter losses, implemented in cooperation with IEC SC22G/WG18.
Smart Lighting – New Features Impacting Energy Consumption
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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.
Guide to Energy Management Protocols
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This report is a guide to ‘application layer’ communications protocols used for energy management, such as those used to facilitate intelligent efficiency and demand flexibility.
Mobile Device Efficiency
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This report analyses the energy use of mobile devices, compares policies and identifies policy gaps.
Interoperability
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The objective of this study is to gain a better understanding on the issue of (a lack of) device interoperability and the resultant impact of this on Intelligent Efficiency and Demand Flexibility
Energy Efficiency Metrics for Data Centres
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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
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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
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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)
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Update of energy efficiency regulations and trends in 4E economies
4E PEET Status of Room Air Conditioner Regulations 2022
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Update of energy efficiency regulations and trends in 4E economies
4E PEET Status of Television and Displays Regulations 2022
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Update of energy efficiency policy measures and trends in 4E economies
4E PEET Status of Domestic Refrigerator Regulations 2022
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Update of energy efficiency regulations and trends in 4E economies
Classification of digitalisation technologies for electric motor driven systems
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This report by EMSA provides a classification of different digitalisation technologies applied for motor systems. The following technologies are analysed: sensors, Internet of Things, intelligent control, data analytics, real-time monitoring, artificial intelligence, digital twins, cloud based services, augmented reality, additive manufacturing, robotics, drones.
LED Product Lifetime Testing Report
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A new report by the IEA 4E Solid State Lighting Annex provides a look across the body of literature on lifetime definitions for LEDs and LED products. The reports looks 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 […]
A “life cycle thinking” approach to assess differences in the energy use of SiC vs. Si power semiconductors
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Wide bandgap (WBG) semiconductors have the potential to provide significant improvements in energy efficiency over conventional Silicon (Si) semiconductors. While the potential for energy efficiency gains is widely researched, the relation to the energy use during manufacturing processes remains insufficiently studied. This question is especially relevant for Silicon carbide (SiC) semiconductors, as there are some […]
Interlaboratory Comparison for Goniophotometers (IC 2017)
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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 […]
Controls Validation Method for Variable Speed Air Conditioners and Heat Pumps
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This controls validation method aims to provide a uniform method of test which will validate native control operation and performance criteria for residential air conditioners and heat pumps with variable speed compressors. This method is intended to be used as a confirmation against regulatory tests in which modulating component(s) are overridden.
Data Centre and Server ‘Idle Coefficients’
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This report presents information on novel data centre KPIs: the Server Idle coefficient and the Data Centre Idle Coefficient.
Achievements of Energy Efficiency Appliance and Equipment Standards and Labelling Programmes: 2021 FULL Report
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The complete 2021 report on the impact of standards and labelling programmes in countries around the world, drawing on nearly 400 published reports, studies and papers covering more than 100 products.