EDITORIAL Supplement www.cibsejournal.com #Build2Perform Editorial Editor: Alex Smith Tel: 01223 378034 Email: asmith@cibsejournal.com Tel: 01223 378048 Technical editor: Tim Dwyer Reporter: Molly Tooher-Rudd Designer: James Baldwin CIBSE Journal is written and produced by CPL (Cambridge Publishers Ltd) Tel: +44 (0)1223 378000. www.cpl.co.uk 1 Cambridge Technopark, Newmarket Road, Cambridge CB5 8PB. Editorial copy deadline: First day of the month preceding the publication month Advertisement sales Display and sponsorship Jim Folley jim.folley@redactive.co.uk Tel: +44 (0) 20 7324 2786 Products & services Daniel Goodwin daniel.goodwin@redactive.co.uk Tel: +44 (0) 20 7880 6217 Recruitment advertising cibsejournaljobs@redactive.co.uk Tel: +44 (0) 20 7880 6215 Advertising production Jane Easterman jane.easterman@redactive.co.uk Tel: +44 (0) 20 7880 6248 The opinions expressed in editorial material do not necessarily represent the views of the Chartered Institution of Building Services Engineers (CIBSE). Unless specifically stated, goods or services mentioned in editorial or advertisements are not formally endorsed by CIBSE, which does not guarantee or endorse or accept any liability for any goods and/or services featured in this publication. We remind all readers that it is their responsibility to verify advertisers products claims. Light where you need it It turns out that light pollution is a more complicated problem than simply having too much light, or having it in inappropriate places. As Iain Macrae, former president of the Society of Light and Lighting, puts it: We have underestimated the total amount of light pollution and we have remained blind to how bad it really is. (See page 50.) As an energy-saving source, LEDs have proliferated, but the blue-wavelength light many emit has a negative impact on humans, animals and plants, as well as contributing to skyglow. Lighting designers already acutely aware of the need to reduce and control light levels in the exterior environment are beginning to consider more radical solutions. A project in Copenhagen, which uses red light to illuminate a major highway and cycleway, may be the start of more lateral and research-based thinking (page 53). Where interiors are concerned, the case for sustainability is increasingly about daylight. Two winners of a 2022 IALD Award of Excellence are new art galleries in China, and exemplars of a seamless amalgam of daylight and artificial light (page 48). In one scheme particularly, natural light drove the specification to minimise use of artificial light. An ode to daylight, said one judge. Jill Entwistle, editor of the CIBSE Journal Lighting Special CONTENTS 43 News 44 Guiding lights The Society of Light and Lightings latest guidance, covering emergency lighting and illumination for control rooms, and communal residential home 48 Pure and simple Use of natural light was core to the success of two lighting schemes in China 50 Feeling blue Light pollution has soared in recent years, with a particular increase in blue light. Iain Macrae argues its time to rethink external lighting 55 CPD: Assessing daylight solutions for commercial buildings Incorporating daylighting into the built environment and the guidance available Lightening the load Amid the ongoing energy crisis, we are all under pressure. The sad truth is, it could have a lasting impact on how firms operate for many years to come. Coupled with the growing urgency to decarbonise the built environment, such challenges are causing business leaders, and those responsible for the operation of buildings, a huge headache. The government has taken active steps to quell the stormy seas, but it has been made clear that such support cannot, and will not, last indefinitely. We have seen ministers want to drive the right behaviours to reduce energy consumption and increase the implementation of energy efficiency measures. Surely this sends a clear message that businesses should use the next few months to focus on sustainable solutions that reduce energy demand and improve operational efficiency? While innovative low carbon technologies could be seen as the key to improving energy efficiency, they are an expense that many cant afford in the current economic state. Are too many overlooking the far simpler and more costeffective solutions such as replacing outdated lighting with modern LED systems that could be vital in cutting energy bills? There has never been a better time to review core building systems of which lighting is one of the most fundamental and implement measures that save energy, and reduce operational costs and carbon emissions, as part of wider sustainability efforts. No organisation can afford to pay the price of inaction when it comes to energy, and lighting is the perfect place to make positive changes. DEBBIE-SUE FARRELL, head of wellbeing and marketing manager at Tamlite Lighting LUX Manufacturer of theYear 2018 42 December 2022 www.cibsejournal.com CIBSE Dec 22 pp42 Contents Supp.indd 42 25/11/2022 18:09