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. In 2016, the first […]

Mobile Device Efficiency

This report analyses the energy use of mobile devices, compares policies and identifies policy gaps.

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 makers and programme managers guidance on the most important parameters to consider when specifying or regulating LED lamps and luminaires. Parameters include efficacy, lifetime, light colour, durability, […]

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.

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 […]

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

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.

Network Standby Power Basics (revised April 2018)

This report incorporates and organizes our collective understanding of the network standby function, identifies the primary factors that influence its power draw, develops a framework for understanding these factors, and estimates power ranges associated with different network standby function implementations.