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Pure Night and FlexiWhite: Tailored Solutions for Preserving Ecosystems We have developed two innovative lighting systems, Pure Night and FlexiWhite , to meet the dual needs of urban lighting and environmental responsibility. • Pure Night delivers targeted, low-impact lighting that provides visibility where and when it is needed while avoiding unnecessary light spill. This solution is specifically designed to reduce light pollution and protect nocturnal biodiversity. • FlexiWhite offers dynamic control of Correlated Colour Temperature (CCT), enabling cities to adjust light tones throughout the day and night to align with human circadian rhythms. Warmer white light creates a more soothing ambiance that is less disruptive to wildlife, while cooler white light enhances visibility in high-activity areas when necessary. We develop our solutions with the entire urban ecosystem in mind. For example, trees and hedges provide essential habitats for species such as bats and insects, while rivers, canals and waterways act as critical corridors for foraging and migration. Many species are highly sensitive to even minimal artificial light. Given the evidence linking light pollution to the decline in insect populations, the careful design of luminaires, optics and lighting strategies is paramount in reducing ecological disruption. But our commitment goes beyond technology. By partnering with cities, environmental experts and urban planners, we develop lighting strategies that protect natural ecosystems while preserving the character and safety of urban spaces. Through thoughtful design and adaptive controls, we support cities in creating environments that promote human well being and preserve biodiversity.
Saint-Denis’ Responsible Lighting Programme A pearl of the Indian Ocean, Réunion Island is renowned for its unique volcanic landscapes and rich biodiversity. However, this natural heritage carries significant responsibility. When night falls, public lighting must balance human safety and energy efficiency with the preservation of local ecosystems. In 2019, the city of Saint-Denis launched a major renovation of its public lighting as part of a wider strategy to save energy and reduce the city’s carbon footprint. Today, over 3,500 luminaires are managed via the Schréder EXEDRA IoT platform, allowing authorities to adjust lighting levels in real time to protect both flora and fauna. This precision is critical during April and May, the nesting season for the endangered Barau’s petrel. During this period, the young birds fly toward the ocean for the first time, often becoming disoriented by old, dazzling light sources. To mitigate this, Saint-Denis, in collaboration with the Société d’Etudes Ornithologiques de La Réunion, reduces the intensity of the lighting to 10% in affected areas during this period. The Schréder EXEDRA platform enables each luminaire to be individually controlled, ensuring lighting is only provided where it is truly necessary.
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