An LED lighting upgrade at Marks and Spencer’s store in Dublin’s famous Grafton Street by Prolight Design has seen the reuse of 2.5 kilometres of linear profile,
T5 fluorescent in a linear system combined with compact fluorescent and metal halide downlights were replaced with a custom LED gear tray.
With annual usage in excess of 4,500 hours annually, the existing sales area lighting typically used 1,100,00kWh per year.
By switching to the latest LED solutions, M&S was able to save over 610,000kWh, with an associated annual saving in running cost of £104,166 and an estimated annual maintenance saving of £42,000.
Prolight Design worked closely with the M&S team to develop a bespoke modular LED solution designed for easy installation to the existing linear system and ensuring a solution that respected and enhanced the existing store architecture, whilst offering improved light levels, light quality and significant energy savings.
The LED gear tray was developed with a twist-lock fixation to install into the existing profiles. The latest LED and drivers were combined with new diffusers to ensure maximum efficiency and an ‘as new’ appearance and over 50 per cent energy saving.
From the outset the aim was to avoid a ‘use-and-discard’ approach which can be common in lighting upgrades, and by doing so, reusing over 2.5 kilometres of profile, the equivalent to over 8.5 metric tonnes of aluminium.
While aluminium can be readily recycled, there was a clear sustainability and carbon reduction advantage in its reuse and the associated reduction in use of new material.
Prolight Design developed the replacement gear trays to ensure that the installation time was kept to a minimum which was critical with the upgrade undertaken overnight.
Fitted with state of the art LED and drivers from Inventronics with a rated lifetime of up to 100,000 hours, the installation is expected to comfortably exceed 10 years without maintenance.
Beyond the extensive Linear LED upgrade, point for point replacements for the rest of the store saw the conversion of compact fluorescent and CDMT downlights to the latest GEN-E range from Prolight Design, delivering efficiencies of over 160 Lumens per Watt and a 66 per cent energy saving.
The GEN-E range uses the latest CRI 90 LED chips with perfect colour rendering across the entire spectrum while delivering market leading efficiency. GEN-E luminaires apply circular design principles to enable remanufacture and the highest possible recyclability at end of life with a minimum of 85 per cent of the material content locally recyclable.