Welcome To The 4E Publications Area

Round Robin of Converter Losses
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
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.

Guide to Energy Management Protocols
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
This report analyses the energy use of mobile devices, compares policies and identifies policy gaps.

Standardisation for Smart Devices
This report highlights the most relevant standards in areas such as measurement of energy consumption of smart devices, and communication protocols for smart devices.

Interoperability
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

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 IEA 4E SSL Annex has published its new and updated “quality and performance requirements” for the most popular LED lamps and luminaires. These specifications are offer

Policy Brief – Digital technologies for motor systems
This Policy Brief shows the key findings of the EMSA report Classification of digitalisation technologies for electric motor driven systems.

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 – Electric Motor Systems Annex Overview 2019 – 2024
This Policy Brief gives an overview on the work of the 4E Electric Motor Systems Annex (EMSA)

Classification of digitalisation technologies for electric motor driven systems
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

LED Product Lifetime Testing Report
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.

2021 4E Annual Report
Read the 2021 Annual Report for the IEA Technology Collaboration Programme on Energy Efficient End-use Equipment (4E)

Policy Brief – Blockchain Energy Consumption
This policy brief explains how blockchains work, their use for cryptocurrencies and resulting energy consumption

Policy Brief – Small Network Equipment
Provides policy considerations for improving the energy efficiency of small network equipment such as modems, routers, network extenders, etc.