Heat networks

Artesia

Artesia Environnement specializes in groundwater consultancy and the design of geothermal open loop systems. It provides aquifer characterization, predictive 3D hydrogeological modeling, and technical advisory services. The company also develops the Krigis software for the management of groundwater pollution data.

Rue du Bois Saint-Jean 15, 4031 Seraing, Belgique

Last updated: 06/03/2026

Callens

Callens is a Belgian family firm founded in 1966. In just over half a century we have grown into a much sought-after heating and air technology partner for the process engineering industry.

Industrielaan 21, 8790 Waregem, Belgique

Last updated: 25/02/2026

CoopERLIC

CoopERLiC (Coopérative Énergétique Liégeoise Citoyenne) is a social economy cooperative whose objective is to support collective action for the climate in order to enable the people of Liège to become concrete actors in the Energy Transition. It will also participate in the short energy supply chain.

Rue de l'Académie 53, 4000 Liège, Belgique

Last updated: 06/03/2026

Coriance Belgium

We build, develop and operate local urban heat networks powered by sustainable energy.

Last updated: 23/04/2025

Decubel

Decubel is a company specialized in earthworks, water management, drainage and utility infrastructure. It provides technical solutions for site preparation, installation of water networks and sustainable infrastructure projects, serving public authorities, industrial clients and development projects.

Rue de l'Adoption 61, 5660 Couvin, Belgique

Last updated: 06/03/2026

Eurodrill

Founded in 1992, Eurodrill has carried out more than a thousand boreholes throughout Belgium and has become a recognized partner in the sector. Specialized in the drilling of water wells, this growing family business has been successfully diversifying its activities over the past ten years: pumping installations and tests, geothermal drilling, monitoring of water resources, consultancy, R&D.

Rue de la Béôle 116, 4050 Chaudfontaine, Belgique

Last updated: 23/04/2025

Exergia

Exergia is a consulting, engineering and project management company dedicated to accelerating the energy transition and industrial decarbonization. We support companies in improving their energy efficiency, reducing their CO2 emissions and adopting sustainable solutions to climate challenges.

Chemin du Cyclotron 6, 1348 Ottignies-Louvain-la-Neuve, Belgique

Last updated: 08/01/2026

EXTRAQT

EXTRAQT is the expert in sustainable heating with aquathermal energy, a heat pump technology that uses surface water as a source.

Brusselsestraat 190, 3000 Leuven, Belgique

Last updated: 06/03/2026

IDEA

IDEA carries out missions of general interest in the integrated management of water and energy for the territory of the Heart of Hainaut. It operates demerging, sanitation, wastewater, production and distribution of drinking water. It also develops and manages local energy solutions such as geothermal, heat networks and renewable energies.

Rue de Nimy 53, 7000 Mons, Belgique

Last updated: 06/03/2026

in BW

As the operator of the Smart Region dynamic of the Digital Wallonia strategy for the municipalities of Walloon Brabant, inBW's mission is to lead the region, educate elected representatives and raise awareness among municipalities of the digital transition, support projects and simplify access to solutions for an Intelligent Region and to open data.

Rue de la Religion 10, 1400 Nivelles, Belgique

Last updated: 06/03/2026

Karno

Karno is a competitive, efficient and sustainable thermal energy network developer.

Last updated: 11/02/2026

Kingspan Logstor

Leader within District Heating, offering complete pre-insulated pipe systems with focus on energy efficiency.

Jadelaan 43-47, 2132 XX Hoofddorp, Pays-Bas

Last updated: 15/12/2025

Lambert Frères

Civil engineering works - Earthworks and groundworks - Road construction - Foundation works - Drainage works - Water purification and storage works - Installation of various types of pipes - Demolition and recycling of aggregates

Rue de l'arbre 10, 6600 Bastogne, Belgique

Last updated: 06/03/2026

Line Corner

Business-oriented energy experts willing to have an impact by helping corporations take the right decisions in order accelerate their sustainable transition.

Last updated: 23/04/2025

Luminus

First challenger on the Belgian energy market, Luminus is a major renewable electricity producer and energy services supplier.

Bld du Roi Albert II 7, 1000 Bruxelles, Belgique

Last updated: 26/02/2026

Pepps

Pepps develops digital solutions to automate, monitor, and analyze technical processes. In the water sector, the company designs systems for monitoring, data processing, and decision support, integrating instrumentation, IoT, and image analysis to improve accuracy, responsiveness, and operational management.

Av. Alexander Fleming 10, 1348 Ottignies-Louvain-la-Neuve, Belgique

Last updated: 04/03/2026

Purecontrol

Purecontrol develops an artificial intelligence solution that optimizes industrial processes in real time to reduce energy and chemical consumption as well as associated emissions. Deployed across more than 500 water treatment sites, its technology helps improve both environmental and economic performance, without any additional hardware investment.

Last updated: 06/03/2026

Rescoop Wallonie

RESCOOP WALLONIE asbl, Fédération wallonne des coopératives citoyennes d’énergie renouvelable

Rue de l'Académie 53, 4000 Liège, Belgique

Last updated: 06/01/2026

Resolia

Developing efficient district heating networks requires analyzing technical, energy, and socio-economic data. Through innovative modeling, Resolia provides decision-making and control tools for public authorities, developers, and network operators—optimizing projects and cutting CO₂ emissions by up to fourfold.

Chemin du Cyclotron 6, 1348 Ottignies-Louvain-la-Neuve, Belgique

Last updated: 09/03/2026

SPARX Industries

Design, manufacture and assembly of all types of piping and boilerwork, including installation and maintenance. Management of all types of fluids in all materials.

Zoning Industriel 2ème 20, 6040 Charleroi, Belgique

Last updated: 08/10/2025

Spi

As the regional development agency for the province of Liège, Spi supports businesses and local authorities in their projects involving establishment, development and sustainable transition. SPI manages business parks and offers property services and solutions to enhance the region's appeal and competitiveness.

Rue du Vertbois 11, 4000 Liège, Belgique

Last updated: 04/03/2026

S²Engineering

S²E is short for “Smart & Sustainable,” reinforcing its goal of linking technology with sustainable development. The term ‘Engineering’ that follows is equally important because it affirms the approach with which the two “S”s are treated: like engineers. This signifies our commitment to rigor and measurement in all actions taken in both “S”s.

Pl. du Perron 23, 6030 Charleroi, Belgique

Last updated: 09/03/2026

Teenconsulting

Teenconsulting, with over 20 years of expertise in energy performance, conducts energy audits, studies, work monitoring and EPCs. Our team of six AMURE/UREBA-certified engineers has strong experience in swimming-pool technical installations. We analyse systems, guide project owners, coordinate works, ensure proper commissioning and deliver lasting energy savings and client satisfaction.

Chaussée de Nivelles 60, 7181 Seneffe, Belgique

Last updated: 06/03/2026

Tonomia

Specialising in transforming car parks into solar hubs, Tonomia combines photovoltaic energy production, electric vehicle charging stations and modular data centres for AI. Powered by local renewable energy and equipped with GPUs, these distributed infrastructures reduce costs, carbon footprint and dependence on traditional data centres.

Rue des Gaillettes 20, 4651 Herve, Belgique

Last updated: 06/03/2026

TWEED

A Walloon organisation bringing together companies active in the sustainable energy sector, Cluster Tweed initiates, participates in and monitors a wide range of projects in various sectors (wind power, photovoltaics, geothermal energy, smartgrids, etc.) and professions (R&D, financing, manufacturing, marketing, etc.).

Last updated: 04/02/2026