Roundtable debate Lighting efficiency Bright ideas


Lighting is a major contributor to the carbon footprint of all types of building. Making lighting more efficient is therefore key to achieving carbon-reduction targets. CIBSE Journal, together with sponsor Lutron, brought together a range of leading experts from across the industry to discuss the question: How can key supply chain players in the building engineering industry promote lighting efficiency and provide the tools and technologies to radically reduce lighting’s substantial carbon footprint? Bob Cervi chaired the event


Topic one Is lighting efficiency a neglected part of the built environment, particularly in the regulations? Lighting is often the biggest user of energy in a building – particularly in larger offices and retail outlets. So why is it apparently given such a low priority compared with other contributors to a development’s carbon footprint, such as the mechanical and electrical services? One overarching problem is a lack of tight regulation


on lighting efficiency. Revisions to the Building Regulations, in particular the recent Part L 2010, were a missed opportunity to put more emphasis on lighting efficiency, the roundtable participants agreed.


www.cibsejournal.com ‘We need the legislation that will drive those


developers who are not looking at lighting efficiency,’ said Simon Robinson of WSP UK. According to Dominic Meyrick of Hoare Lea: ‘The problem rests with CIBSE and the writing of [lighting] codes.’ AECOM’s Lee Barker-Field agreed: ‘Increasingly,


outside of the industry people are buying energy-saving lighting equipment. But in the industry, the problem is the design process and some of the tools that are involved in that process, such as the codes.’ Clearly, regulations are key, and Part L 2010’s


minimum requirement of 55 luminaire lumens per circuit watt for interior office lighting (raised from 45) has not gone far enough, many of the group argued (see


Roundtable participants


Lee Barker-Field is principal, lighting design, at AECOM


Bob Cervi is editor of CIBSE Journal


Marc Draper is project director, UK and Middle East, for Scott Wilson


Dominic Meyrick is lighting principal – partner, Hoare Lea


Mark Ridler is lighting director at BDP


Simon Robinson is associate director, WSP UK


Julian Sutherland is design director for sustainable development at Atkins


Iain Trent is project engineer at Land Securities


Alan Tulla is president of the Society of Light and Lighting, a CIBSE society


Simon Wootton is principal technical manager at > NG Bailey


September 2010 CIBSE Journal 27


All images: Simon Weir www.simonweir.com


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