SUSTAINABILITY FEATURE | |
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Using innovative station lighting for improved sustainability David Woodcock, Business Unit Manager – Rail at DW Windsor looks at how the correct lighting technology and strategy can make a significant contribution to reducing the energy usage of stations, while still meeting all the functional and safety requirement
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ith the reduction of greenhouse gas emissions and improved sustainability now a priority in order to minimise the impact of climate change, lowering operational energy usage is essential. The UK rail sector in particular is aiming to be a global leader. In fact, Network Rail was the first rail organisation in the world to set what it described as ‘ambitious science-based targets to cut carbon emissions and help limit global warming to 1.5∞C’. In its ‘Environmental Sustainability Strategy 2020-2050’ Network Rail details how it aims to achieve a ‘LowEmission Railway’, including reaching net zero by 2050. The rail sector is also one of the largest single consumers of electricity in Britain. Therefore, reducing energy consumption is a necessity and the lighting in and around stations is an area where immediate and significant savings can be made.
Consider energy efficient lighting A simple step that can make a meaningful difference is upgrading the existing lighting to highly energy efficient LED products. There are LED lighting solutions available for all areas including the car park, platforms, stairs, walkways and bridges as well as specially engineered products for trackside applications. The high degree of output control that LEDs offer as well as advances in optical distribution means that leading manufacturers will be able to adapt the lighting to suit the existing infrastructure to minimise the work required. Furthermore, the longevity of modern LED luminaires makes them a more sustainable option. For example, exterior lighting solutions typically have a rated lifetime of over 100,000 hours – the equivalent to over 20 years of operational use.
Minimising wasted energy Another simple step that can be taken to reduce energy usage is ensuring that light is directed where it is needed, with minimal spill, to ensure energy is being used effectively. Careful consideration of the placement of luminaires is essential but extensive research and development into the optics for luminaires allows precise control over the distribution of light and therefore which areas are illuminated. This not only prevents energy waste but also eliminates light trespass into nearby homes and buildings as well as creating areas of darkness for wildlife. The role of lighting controls The energy reductions achieved through the use of LEDs can be enhanced further with the use of lighting controls. Integrated sensors and smart dimming profiles can be used to minimise the wasted energy during off-peak times. This is especially valuable Rail Professional
