Project Overview

Kent County Council is one of the largest lighting asset authorities in the UK with 118,000 street lights and some 25,000 lit signs and bollards. The annual cost of illuminating and maintaining the stock is over £9m, a cost that continues to rise. The main focus of the project is to reduce the cost of illuminating and maintaining these light sources by converting them to more efficient LED products. Bouygues Energies & Services were appointed after a successful tender bid by the council to manage the installation conversion from HID to LED lanterns. The P852 luminaires are manufactured in Coleford, Gloucestershire to a forward schedule. The advantage of producing the luminaires in the UK means that CU Phosco Lighting can react quickly to any site changes or deviations that can occur.  This assists the contractor in improving efficiencies in the program as well as reducing any delays to the road schedule. During the supply of the luminaires CU Phosco Lighting and Bouygues Energies & Services are working in partnership with their design consultant (Designs for Lighting) to a forward planned site schedule ensuring minimal distribution to the road network and public users.  The schedule outlines CU Phosco Lighting production for quantities and geographical boroughs within the county.  This provides clarity for both CU Phosco Lighting and Bouygues Energies & Services to maintain delivery of the project in a professional, efficient and organised manner.  The production programme was assisted by Designs for Lighting who are designing every asset to ensure compliance with standards and optimised energy efficacies, the luminaires used were carefully considered for efficiency and maintenance and concluded that five versions of the P852 to be used with two optics. This enabled a much more efficient production and installation programme.

Results and Benefits

The standard P852 luminaire build was modified for Kent County Council with additional features included to meet the council’s specification and approval. The project commenced in March 2016 and is on a three year rolling project starting in residential areas which are to be completed within Q2 2017. Then eventually moving to the main roads and highways in the summer of 2017 and to be completed by December 2018. The improvement in light quality from HID to LED is evident across the districts that have been installed so far. The P852 provides exceptional optical control minimising obtrusive light, without compromising the lighting performance for both road and pedestrian use. 30,000 P852 lanterns have already been installed taking the average energy consumption from 469KW on the existing HID asset to 117KW for the P852 LED light source this equates to circa 70% energy reduction.
All 33,600 luminaires have now been delivered to the Bouygues Energies & Services depot in Kent, all on time and within the contract schedule. CU Phosco Lighting are proud to have been involved with this phase of the Kent County Council LED street lighting and highways energy reduction and public lighting improvement project. 



Energy Saving

The estimated energy reduction from existing HID sources to the P852 LED lantern is approx. 70%.