The Society of Light and Lighting (SLL) welcomes all who are interested in any aspect of light, lighting, and its applications.
Building on over a century of history, the Society was originally founded as the Illuminating Engineering Society in 1909, later becoming a division of the Chartered Institute of Building Services Engineers (CIBSE). The SLL recognises the expertise of the lighting community in tackling the challenges which face us all, considering the climate emergency, global political uncertainty, rapid technological change, significant societal shifts, and skills shortages.
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Joining SLL
The Society offers grades of membership designed to recognise members’ knowledge and expertise.
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Publications and Guidance
SLL members can download PDF versions of SLL publications for free as part of their CIBSE membership
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Lighting Research & Technology
Lighting Research & Technology (LR&T) is CIBSE's international journal containing refereed papers on all aspects of lighting research and technology.
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Light Lines Newsletter
Light Lines is the Society’s bi-monthly magazine. It includes carefully curated content on an array of different lighting topics. Read the latest issue online.
SLL Light Lines MagazineSLL Events
View All- Group SLL, South West
- Date April 20th 2023, 17:30 - 19:00
- Location Bristol
- Group SLL
- Date April 26th 2023, 12:00 - 13:00
- Location Online
- Group SLL
- Date June 7th 2023, 13:00 - 14:00
- Location Online
Latest News
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Consultation on new Ecodesign Requirements for Lighting Products
The Department for Business, Energy & Industrial Strategy (BEIS) are seeking views on a proposal to update the ecodesign requirements for lighting products from 2023 and 2027. It is proposing to require that lamps offered for sale in Great Britain have a minimum energy performance of 120 lm/W by 2023 and 140lm/W by 2027. The proposal also highlights some exemptions.
New SLL guide to office lighting considers hybrid working and circular economy
The Society of Light and Lighting (SLL) have launched the latest Lighting Guide 07 (LG7): Offices. There have been considerable developments since the previous edition, which was published in 2015.
Scott Kluger named SLL Young Lighter 2022
Scott Kluger, Senior Daylight Designer at Hoare Lea was named SLL Young Lighter 2022 following the competition finals in December. Scott's winning project focuses on daylight harvesting to optimise lighting performance. Now in its 28th year, the SLL Young Lighter 2022 finals were held online on 15 December 2022.
Lighting for Offices
The Society of Light and Lighting (SLL) has published a new edition of Lighting Guide 7: Lighting for Offices.
The office environment has changed considerably in recent years. Tablet and smartphone use continue to free people from their desks and present challenges to lighting designers. It is likely that people will spend some time in offices but that their working week may see them work from various locations, including their homes. As such, this revision of Lighting Guide 7 now includes advice on lighting for a home office.
The SLL Sponsors
International Day of Light
International Day of Light