Aston University Library

The Aston University Library building was extensively lit with suspended linear Thorlux Light Line luminaires, using high-frequency 2x 28w or 2x 35w fluorescent lamps. This lighting system had been in place for many years. Recognising the energy-saving potential of upgrading the lights to a modern, controlled LED lighting system, Aston University decided to explore options for making improvements.

Given that the bodies of the original luminaires were still in good condition, retrofitting was self-evidently the most economically effective and environmentally sustainable way forward. Collaborating closely with contractor Midland Fire Security Services Ltd, Thorlux Lighting began planning to provide a practical and efficient retrofitting solution.

As a result, engineers fitted 657 luminaires with new Thorlux Light Line Retrofit kits. After removing the old louvres, lamps, and drivers, engineers clipped the drop-in retrofit kits directly into the existing luminaire chassis. This kit is a highly sustainable alternative to replacing the complete luminaire. Upgrading with Light Line Retrofit kits typically saves 68% embodied carbon and can halve operational carbon.

Light Line Retrofit scored 2.9 and earned an ‘excellent’ certification under the CIBSE TM66 Circular Economy Assessment Method (CEAM). Over 60% of the original luminaire stays in use; in other words, the Aston University system upgrade has generated less than half of the waste a complete replacement would. Additionally, each retrofitted Light Line has approximately 127 kg less embodied carbon than an equivalent brand-new luminaire, calculated using the CIBSE TM65 calculation methodology. The retrofitted luminaire matches the original Light Line for light output, distribution, and glare control while improving efficacy, maintenance, and luminaire control.

The retrofitting project at Aston University Library took place over the summer holidays in 2024 to minimise disturbance. As a result of the upgrade and the use of the SmartScan control system, the library has almost halved its annual lighting energy usage compared to that used by the fluorescent lighting system. This has resulted in a saving of eleven tonnes of CO₂e each year. Furthermore, the expected yearly maintenance costs have been reduced by approximately 86% due to the improved performance and reliability of the new LEDs, coupled with the advanced SmartScan lighting management system. With the updated SmartScan luminaires now installed, students and staff at Aston can conduct their studies and research under high-quality lighting for years to come.