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.
Discover now
Lighting Research & Technology
Lighting Research & Technology (LR&T) is CIBSE's international journal containing refereed papers on all aspects of lighting research and technology.
Find out more
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.
Find out moreThe SLL Sponsors
International Day of Light
International Day of Light
National Illumination Committee of Great Britain
The International Commission on IlluminationSLL Events
View AllLighting
- Group SLL, Yorkshire
- Date February 9th 2023, 18:00 - 20:00
- Location Arup, 9th Floor, St Paul’s Place, Norfolk Street, Sheffield, S1 2JE
Buildings and Building Performance
- Group SLL
- Date February 27th 2023, 09:00 - 18:00
- Location London
Joining SLL
The Society offers grades of membership designed to recognise members’ knowledge and expertise.
Find out more
Publications and Guidance
SLL members can download PDF versions of SLL publications for free as part of their CIBSE membership
Find out moreLighting for Museums and Galleries
The Society of Light and Lighting (SLL) are pleased to announce the launch of a brand-new edition of Lighting Guide 8: Lighting for Museums and Galleries. Written by Lighting Designer, Mark Sutton Vane, this revision replaces the 2015 edition of the guide.
Latest News
View All
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.