Circular Lighting Report

Signify reuses luminaires at Dublin Port Tunnel

Dublin Port Tunnel lighting

Signify has reused all 1,800 lights in a major upgrade of the lighting at Dublin Port Tunnel.
The company has reconditioned the 17-year-old luminaires in the five and a half mile shaft, replacing the high-pressure sodium lamps and gear with LED.
Installers made use of the existing high-quality housings, which were all retested, and CE marked to current standards and fitted with Philips METIS 2816 LED insert trays.
As the new lights were made to fit the existing fittings, installation could be completed with minimal disruption to road users.
Installers worked during late night and early morning hours over five weeks, with each lantern taking five minutes to strip out and replace.
Reusing materials also kept the project’s capital expense to a minimum, saving an estimated €3 million (£2.6 million) compared to a new installation, says Signify.
The project has led to an improvement in colour rendering from CRI 25 to CRI 70 and an energy reduction of 60 per cent.
The project is expected to save upwards of €4 million (£3.3 million) in electricity costs including VAT over the coming five years.
Since the end of 2006, Dublin Port Tunnel has provided a link to the wider motorway network between Dublin Port and the M50, routing heavy goods transport quickly and safely away from city and residential areas. Tunnel maintenance operator ERTO was instructed by Transport Infrastructure Ireland (TII) to find a solution that would reduce energy costs and improve the quality of light in the tunnel.
Signify’s LED retrofit solution was selected for its ease of replacement and cost savings. Also, given that the tunnel is a dedicated route for Heavy Goods Vehicles between the port, located in the heart of the city and the greater road network via the Coolock Lane Interchange (M50), the LED lighting project also aims to improve visibility in the tunnel. The project is part of the Irish government’s energy efficiency plans and was partially funded through the European Green Deal.

• Don’t miss Circular Lighting Live 2023, Recolight’s flagship conference and exhibition taking place on Thursday 21 September 2023 at the Royal College of Physicians in London. Free to specifiers, Circular Lighting Live 2023 will feature leading experts, specifiers and policy makers who will share their insights into forthcoming standards and legislation, emerging technologies and new business models. For 2023, the organisers have moved to a bigger venue with more expansive exhibition floor and included a dedicated track for lighting designers. More info:

Ray Molony

Recolight Report is an independent guide to the latest developments in sustainable and circular lighting. Learn about the people, products, projects and processes that are shaping our industry’s low carbon future. Plus: explainers on the latest innovations, opinion from thought leaders and video interviews with leading disruptors. Edited by lighting expert, editor and industry figure Ray Molony.