inteliLIGHT enabling interoperable urban lighting in Brussels, Belgium

inteliLIGHT Brussels-Sibelga-project smart street lighting

Brussels is one of the most illuminated and densely urbanized regions in Europe. The city faces a complex mix of challenges: high energy consumption, rising operational costs, ambitious climate targets and increasing public expectations around safety and quality of life.

Operator of public lighting in the Brussels region, Sibelga, launched one of the most rigorous smart street lighting evaluations in Europe, aimed at identifying a future-proof, interoperable solution capable of supporting long-term energy efficiency, operational optimization and smart city evolution. And that’s where Flashnet’s inteliLIGHTcame into play, being nominated among selected suppliers for a long-term contract. 

The location and context

Belgium is famously one of the most illuminated countries in the world, visible even from space at night. In the Brussels-Capital Region alone, Sibelga is one of the main public lighting operators, managing over 85,000 light points.

The maintenance and operational costs of the public lighting network were significant. In 2016, street lighting accounted for roughly 50% of the local authorities’ total electricity bill, with the 85,000+ poles in Brussels consuming 50 million kWh annually, equivalent to the power consumption of 200,000 families. With 85% of Belgians requesting urgent climate action and 98% of the population living in urbanized areas, the region faced immense pressure to modernize (Agoria.be).  

As the officials put it, “The switch to smart LED lighting in a smart city context can cut costs by 30 to 80% and can generate average savings of €70 million for our cities and municipalities” (Agoria.be). While the transition to LED technology is a critical first step toward reducing energy consumption, smart street lighting adds a second layer of efficiency. Together, LED luminaires and smart control transform street lighting from a static energy consumer into an actively managed urban asset. 

The challenge

The Brussels street lighting operator’s primary requirement was independence. They aimed to avoid the so-called “walled garden” where cities become locked into a single vendor’s proprietary ecosystem. In such models, expanding the infrastructure, integrating new technologies or switching suppliers often becomes difficult, costly, or technically impossible over time. 

Instead, Brussels required a solution with a high degree of interoperability at both hardware and software levels. The system needed to communicate with ease between different suppliers and Sibelga’s own IT ecosystem. 

Also, Brussels’ status as one of the most urbanized areas in the world introduced a twofold technical challenge: 

1. Urban density & connectivity: Brussels’ dense infrastructure and potential signal interference meant Sibelga needed a communication technology capable of maintaining strong coverage and real-time control.

2. Complex management & precision: The street lighting operator required advanced CMS features, including intricate dimming schedules to meet ambitious energy-saving targets and a robust failure detection mechanism to optimize maintenance. 

The solution

To meet Sibelga’s requirements, the proposed solution had to demonstrate, under real operational conditions, that interoperability, responsiveness and long-term flexibility could coexist within a single smart street lighting architecture. 

Flashnet’s inteliLIGHT® solution was evaluated as a modular, standards-based platform, designed to operate across mixed environments and multiple suppliers. At its core, the solution combines TALQ-certified interoperability with carrier-grade NB-IoT communications, enabling reliable, real-time control in one of Europe’s most densely built urban areas. 

The platform supports individual lamp-level control, allowing operators to apply precise dimming profiles while maintaining operational simplicity. Through the inteliLIGHT technology, the controllers allow the configuration of advanced schedules, monitoring detailed electrical parameters and receiving real-time alerts for failures or anomalies across the network. 

The inteliLIGHT solution is TALQ‑certified at all levels, enabling seamless integration with third‑party hardware as well as with any existing utility IT systems.  This standards-based approach allows the lighting infrastructure to remain vendor-independent, protecting long-term investment and enabling gradual evolution as technologies and policies change. 

Connectivity is provided through the NB-IoT technology, selected for its strong coverage, reliability and near-real-time responsiveness. This ensures continuous communication without the complexity or maintenance overhead associated with complex infrastructures, while supporting real-time responsiveness and centralized control. 

By combining open standards, robust communications and a flexible management layer, the solution addressed both immediate operational needs and future scalability, providing Sibelga with a platform capable of supporting evolving energy, environmental and smart city objectives over the long term. 

The technical solution

The Brussels deployment translates the high-level principles of interoperability and openness into a concrete, field-proven architecture. At a practical level, the system is built on three main layers: smart controllers in the field, carrier-grade cellular connectivity and a cloud-based streetlight control platform. Together, these elements give Sibelga fine-grained control over each luminaire, real-time operational visibility and the flexibility to evolve the system as technologies and policies change. 

The deployment features a mix of NEMA and Zhaga controllers to accommodate the city’s diverse lighting infrastructure. These devices provide granular control over lighting parameters, advanced analysis of electrical characteristics and instant failure reporting. 

Product Image Product Description
NEMA Controllers

The NEMA controllers enable granular control over lighting parameters, including on/off switching, multi-level dimming and advanced analysis of electrical parameters at each pole.

Zhaga controllers

Zhaga controllers complement the NEMA portfolio by addressing luminaires with Zhaga book 18 standard. Their compact form factor and standardized interface make them ideal for modern LED fixtures, preserving luminaire design while adding full smart control capabilities.

NB-IoT / LTE-M cellular communications, resilient by design

This carrier‑grade communication provided by Orange ensures deep coverage and real‑time command capabilities, allowing the grid to maintain connectivity in dense urban environments where signal propagation is challenging.

Flashnet IoT connectivity platform

A robust integration platform, enabling seamless integration and full interoperability, powered by the TALQ protocol. It connects directly with Sibelga’s management software to fit the customer’s specific IT environment

The deployment

The early phases of the project involved rigorous testing, several pilot implementations, and extensive technical clarifications, ultimately leading to the announcement of Flashnet among the selected suppliers in this long‑term commitment to modernizing the public lighting infrastructure over the next ten years.

Flashnet began deliveries in 2022, with deployments progressing gradually year by year as part of a long-term modernization and maintenance roadmap. 

As of early 2026, the project has scaled significantly: 

  • Total project scope: Over 85,000 potential light points
  • Current inteliLIGHT® street light controllers delivered: 35,000

This rollout is ongoing, progressively replacing the energy-hungry sodium lamps with smart-controlled LEDs, managed directly by Sibelga’s modernized grid operations. 

The results

“Interoperability was a starting point for us when we approached the Brussels project. This initiative shows how cities can modernize street lighting step by step, without locking themselves into rigid systems that limit future choices.” – Alexandru Buzatu, CCO, Flashnet 

The implementation of the inteliLIGHT® solution positions Brussels as an industry best practice for smart lighting renovation. 

  • Energy decarbonization: The shift contributes directly to the Covenant of Mayors’ goal of reducing CO2 emissions by 40% by 2030. By transitioning to LED and smart controls, the region is on track to halve its lighting electricity costs. 
  • Operational efficiency: With automated reporting and a strong failure detection mechanism, maintenance teams no longer rely on night patrols or citizen complaints. They can address issues proactively, improving public safety and reducing service operational costs. 
  • Future-readiness: Because the system is built on open standards (TALQ) and open communication (NB-IoT), Brussels has established a foundational digital layer. The streetlights are connected nodes in a smart city network, ready for future IoT integrations without the need for new civil works. 
  • Safety & reliability: Real-time monitoring and instant fault detection allow operators to identify failures immediately, reducing dark spots and improving public safety across the city. 
  • Reduced light pollution: Smart dimming schedules and adaptive lighting help limit excessive illumination during low-traffic hours, contributing to reduced light pollution and better protection of urban biodiversity, an increasingly important priority in Western Europe.

About inteliLIGHT ®

inteliLIGHT® is a smart street lighting control solution that offers detailed lamp-level management capabilities (ON/OFF, dimming, real-time reporting) over multiple IoT communication technologies. In-depth grid awareness is obtained through accurate utility-grade readings of any changes occurring along the grid, reducing energy loss and offering advanced maintenance optimization tools. Furthermore, inteliLIGHT® is integrated with Smart City management platforms and offers support for further Smart City development. (www.inteliLIGHT.eu)

About FLASHNET

FLASHNET is a fast-paced tech company that integrates the latest IT, energy and telecommunications technologies into hardware and software solutions, creating and implementing intelligent systems for smarter cities and better infrastructure. Founded in 2005, FLASHNET is a leader in intelligent utility management systems, with worldwide operations. (www.flashnet.ro)

About Sibelga

Sibelga is the distribution network operator for electricity and natural gas in the Brussels-Capital Region. Responsible for maintaining the grid and ensuring reliable energy supply to households and businesses, Sibelga also manages the deployment, operation and maintenance of the region’s public lighting infrastructure. Owned by the 19 municipalities of Brussels, the company plays a central role in facilitating the capital’s energy transition and smart city evolution. (www.sibelga.be)

About Lucy Group

Lucy Group is a diversified international group with operating businesses across three sectors: Lucy Electric, Lucy Controls and Lucy Real Estate. Since its origins in Oxford, over 200 years ago, the Group has grown and evolved. Lucy Group now employs over 1,500 employees across offices and factories in 10 regions and trades in over 70 countries. The Group’s annual revenues in 2021 were over £250 million. Further information can be found at www.lucygroup.com