News

A new report analysing Temporal Light Modulation metrics (PstLM and SVM) in LED lighting between 2014 and 2025. The report evaluates supplier-reported product data from the European Product Registry for Energy Labelling (EPREL) database and hundreds of LED lamps tested by the member governments of the SSLC Platform.

Today, the International Energy Agency (IEA) published a commentary on the lighting sector. Offering a global perspective, the IEA provides insights into trends in lighting consumption in buildings and street lighting, and discusses the major efficiency gains over the past two decades thanks to the rapid uptake of the light-emitting diode (LED) technology.

In the January/February 2026 issue of LED Professional Magazine, Dr. J. Norman Bardsley, Chief Analyst for the International Solid-State Lighting Alliance (ISA) in Beijing, China, published an article that looks at the global lighting market and the opportunity for energy savings.

Today, the SSL Annex has published the Nucleus Laboratory Comparison report – Part 2 of the 2023 Interlaboratory Comparison (IC 2023).  IC 2023 is investigating the degree of agreement in the measurements of temporal light modulation (TLM) quantities, in particular, short-term flicker indicator (PstLM), and stroboscopic effect visibility measure (SVM).

Today, at the CIE Midterm Meeting in Vienna, Austria, Dr. Yoshi Ohno, an Expert of the SSLC Platform has presented the first results of the Interlaboratory Comparison (IC 2023) of the measurement of temporal light modulation (TLM) of solid-state lighting (SSL) products.

Today, the SSLC Platform published a new paper on Temporal Light Artifacts (TLAs) which are undesired visual perceptual effects, caused by Temporal Light Modulations (TLMs) that commonly exist in lighting systems, especially LED lighting systems. Accurate

This report presents a comparison and demonstration of measurement equivalency of the five Nucleus laboratories that constitute the core of Interlaboratory Comparison 2023 (IC2023). This report is Part 1, covering LED lamp artefacts used in IC

Today, the Australian government (a Member of the SSLC Platform) published a report that provides a contemporary overview of performance and quality in the Australian LED lamp market.  This report contains test results from 47 LED

Today, the Smart Sustainability in Lighting and Controls (SSLC) Platform published a comprehensive review of the scientific knowledge acquired over the last ten years on the effects of solid state lighting (SSL) on human health.

On 14th May, the SSLC Platform organised an international lighting seminar at Senate House, University of College London.  The slides and video recordings from this seminar are now available on our website.

An in-person (London, UK) seminar and on-line webinar.

The SSL Annex has been given the “Global SSL Award for Outstanding Achievement” from the International Solid State Lighting Alliance on 27 November in Xiamen, China. This award recognises the thirteen years of research, reports and other information that the SSL Annex has shared with the global lighting community.

Preliminary findings from the IEA 4E SSL Annex show that environmental impact for T5 lamps can be reduced by 44% and for T8 lamps by 61% if they are replaced by LED retrofit tubes. These are LED “plug-and-play” retrofit tubes that can be installed directly into existing fluorescent fixtures.

On 9 October 2023, the SSL Annex held a webinar on new features in smart lighting that impact energy consumption delivered by Casper Kofod, an Expert based in Copenhagen, Denmark.  The webinar summarised the findings from a report on Smart Lighting published last year.

The SSL Annex has launched its 2023 Interlaboratory Comparison (IC 2023) of temporal light modulation (TLM) measurements.   IC 2023 is open to all photometric labs that have capability for measuring TLM quantities, in particular, short-term flicker indicator (PstLM), and stroboscopic effect visibility measure (SVM), of LED lighting products.

On 27 March 2023, the IEA 4E SSL Annex organised an international lighting seminar in cooperation with the Swedish Energy Agency.  This seminar was held in Stockholm and offered lighting experts and stakeholders a unique opportunity

Today, the IEA 4E Solid State Lighting Annex is publishing a major report on Smart Lighting.  This report focuses on the smart lighting features that impact energy consumption, and provides a comprehensive overview on various features,

Today, the IEA 4E SSL Annex published its new and updated “quality and performance requirements” for the most popular LED lamps and luminaires.  These specifications, elaborated by experts in the Annex’s six member governments, are not tied

20 December 2021, Stockholm.  The IEA 4E Solid State Lighting Annex (SSL Annex) today published the final report from its 2017 Interlaboratory comparison. With 36 participating laboratories from 19 countries with a total of 42 goniophotometric instruments, this

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