THE IMPLEMENTATION of the City of London’s lighting strategy is seeing widespread changes to the illumination of the Square Mile, with a blend of aesthetic and technical best practice.
The scheme has led to a 60 per cent reduction in energy use and generates data thanks to pollution and air quality sensors as well as vehicle flow sensors for real time traffic monitoring.
It’s believed the local authority is one of the first in the capital to develop a comprehensive and innovative plan, designed in conjunction with top lighting design practice Speirs + Major.
The strategy pulls together three main streams of thought: lighting for people, sustainability and the future.
It addresses over-lighting, unnecessary light pollution, excessive glare and inconsistencies in lighting design, while providing a digital platform on which so-called ‘Smart City’ technologies can be introduced.
A replacement strategy means 30-year-old stock is replaced with easy to maintain technology.
There is individual lantern control using an RF mesh Central Management System (CMS) and Smart City Network from which lighting and smart city technologies and services can be developed.
There is better balanced light and darkness: meeting both functional and aesthetic need. The philosophy is ‘right light, in the right place, at the right time’.
The plan provides suitable and sufficient energy savings: meeting corporate objectives reducing energy costs and the environmental impact.
There is a variable colour temperature strategy – the age-old approach of ‘one solution fits all’ was removed and replaced with three standards.
Main roads are lit in 4000K, side roads in 3000K and heritage luminaires and ‘areas of interest’ are a warm 2700K.
Dimming profiles and lighting levels are adaptive can be amended through interactive technology.
The Smart City tech means that the City of London is pushing boundaries across departments within the borough, using lighting as the backbone of the network.
The street lights include pollution and air quality sensors as well as vehicle flow sensors for real time traffic data.
Following an initial period of consultation and member approvals, trials were conducted to select colour temperature and mounting heights that are fit for purpose.
To ensure the legacy of the strategy and the lighting upgrade is sustained, the City of London has created a street lighting board for on-going improvements and developments.
The strategy has been nominated by exterior luminaire supplier to the project, DW Windsor, for a Lux Award this year.
- Learn more about city-wide strategies at The Illuminated City conference, taking place at LuxLive 2019. The exhibition takes place on Wednesday 13 November and Thursday 14 November 2018 at ExCeL London. Entry is free if you pre-register HERE.