Essential at the security level (e.g.: public lighting would reduce the number of road accidents by 30 to 40%, and acts of burglary or vandalism by 50%) as well as at the level of our perception of public space (e.g. by enhancing heritage), public lighting is now at the heart of various issues surrounding spatial planning policies, for several reasons.
According to the Commission de la Régulation de l'Energie (CRE), street lighting has now become an "energy abyss": it represents the first source of electricity consumption in a municipality.
According to the French Environment and Energy Management Agency (Ademe), this over-representation is mainly due to the obsolescence of the network, which leads to over-consumption and additional maintenance costs. Composed of more than 10 million light points that operate between 3,100 and 4,100 hours per year, 45% of the French lighting fixtures in the fleet are more than 25 years old!
Communities must therefore choose between:
The players in the Smart Territories of tomorrow must,as of today, face various economic, societal and environmental constraints regarding the installation and maintenance of their public lighting network:
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Rather than maintaining increasingly outdated and energy-intensive infrastructure, it is recommended that communities upgrade their urban lighting systems. Indeed, depending on the context and the technology used, the saving in energy consumption and therefore in expenditure for local authorities, thanks to the implementation of intelligent public lighting, would be in the order of 50 to 75%!
The adoption of LEDs, or light-emitting diodes, is currently the preferred change for communities to reduce their energy consumption and bill.
On the one hand, LEDs are much less energy consuming than sodium lamps, and on the other hand their life span is ten times longer.
In addition, LED technology makes it easy to modulate the light intensity by means of a dimmer (dimming principle) that can be configured remotely. Combined with a presence sensor or urban lighting management programme, lighting can therefore be reduced during late night hours or if there is no movement near the lighting column. The decrease in light intensity results in de facto energy savings.
Finally, reflectors on the market today minimize light pollution.
The advent of LEDs in public lighting therefore enables local authorities to renovate their fleets by generating substantial energy and financial savings and reducing nuisances for citizens. In addition, such a project is a real opportunity to take a first step on the Smart City path, by implementing intelligent control solutions for public lighting, and by associating the deployment of new services in the city.
Like Smart Grids, local authorities can count on the increased use of new information and communication technologies (NICTs) to make their public lighting more intelligent, for example:
The communities and Smart Territories of tomorrow will be able to develop autonomous intelligent public lighting networks, relying on technologies such as:
Public lighting networks constitute a dense network of public infrastructures that are intended to support new services to users such as:
Better management of traffic and parking in the city, pedestrian flows, etc., thanks to sensors installed on the masts.
Thus, reducing costs, preserving the environment, and increasing the attractiveness of the city are objectives whose intelligent public lighting can become a vector by opening the door to the creation of the Smart Territories of tomorrow.
With Li-Fi, the latest generations of LEDs are now able to transmit digital data. This innovation would therefore allow users to connect to the Internet under a luminaire. Its main advantages are:
Hello, a question about the challenges of intelligent public lighting? Need to remove doubts in view of a future project? Send an email to Benjamin Fradelle, Tactis Associate Director.