France
Energy
Territorial planning and territorial management

Sustainable modernization of public lighting

The municipality of Grande-Synthe target is to reduce the consumption of public lighting, a very energy-intensive sector in order to save money but also to reduce the energy consumption of the city and to respect the nocturnal biodiversity by including a work of gradation of the lighting.

An initiative of Grande-Synthe City

Overview of the project

Since 2010, the City of Grande-Synthe has been interested in the first economic lighting models with the installation of LEDs, especially during the construction of the Stadium du Littoral, sports complex with positive energy (roof equipped with a photovoltaic membrane 700 m² and 50 m² solar thermal panel in particular).

Further to a first phase of lighting optimization in 2013, a second phase began in 2016. The reduction in energy consumption by the end of 2019 is estimated at 68% (reference year 2011).

The actions carried out concern the renewal of luminaires by LEDs but also the suppression of unnecessary luminaires. For  the sake of circular economy and the fight against waste, the new street lamps are removable and therefore repairable but also recyclable.

This decrease in energy consumption is also related to a work of variation of the intensity of light at night. The lighting is halved between 22h and 6h, and on a district this decrease is experienced up to 80% from 1am.

First French Capital of Biodiversity in 2010, the city has also set up a black framework. Moreover, she signed in this sense, the Charter of sustainable public lighting in 2015 of Noé Conservation.

Objective

The municipality of Grande-Synthe target is to reduce the consumption of public lighting, a very energy-intensive sector in order to save money but also to reduce the energy consumption of the city and to respect the nocturnal biodiversity by including a work of gradation of the lighting.

Level of progress

Multi-site development

Quantitative results

The first phase of optimization saw the removal of 659 luminaires, the change of 26% of the bulbs in led bulbs and the extinction of 143 luminaires representing an energy that is to say a saving of 21% (at 31/12/2015).

For one of the neighborhoods, in 2015 this translates into a power of 40.28 kW to 29.56 kW for 485 streetlights, thus reducing the electricity consumption from 201,847 kWh to 90,265 kWh.

For this same neighborhood, for the year 2016, there are nearly 188 luminaires treated for a total installed power from 21.42 kW to 11.26 kW or a decrease in consumption from 107 533 kWh to 31 146 kWh.

 

Qualitative results

Ongoing

Financing

This project has been financed by the City of Grande-Synthe.

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About the
organisation

Grande-Synthe City

website
Jérôme LEVIS
Technical Services Director
j.levis@ville-grande-synthe.fr
0328236650

Aspiring to the resilience of its territory in the face of energy and environmental crises, and economic changes, the City of Grande-Synthe has initiated a territorial transition dynamic that is both ecological and energy, and more broadly social and economic. In 2011, by deliberation of the Municipal Council, the City of Grande-Synthe declared itself “City in transition”. The challenge is to generalize an awareness of the energy and ecological issues, to make the transition the business of all by strengthening the power of action of the inhabitants.