Cluster TWEED

Prayon

Prayon is a leader in phosphoric acid and phosphates specialties production.

Rue Joseph Wauters 144, 4480 Engis, Belgique

Last updated: 1 October 2025

Project+

Project + is a company specializing in the development and management of projects in the energy and environmental infrastructure sector in Belgium and abroad.

Av. Albert 119, 1190 Forest, Belgique

Last updated: 29 July 2025

Province de Liège

The province of Liège is one of Belgium's provinces, located in the Walloon region. Its capital is the city of Liège, which is also the largest city in the province. The province borders Germany, the Netherlands, and Luxembourg. It is home to Belgium's German-speaking community, located in the east (cantons of Eupen and Saint-Vith).

Rue Georges Clémenceau 15, 4000 Liège, Belgique

Last updated: 23 October 2025

Purecontrol

Purecontrol offers cutting-edge solutions leveraging Artificial Intelligence to reduce energy costs, carbon footprint and optimize operations for drinking water networks or wastewater treatment plants (municipal or industrial). The solution is used for real-time control and data analysis.

Last updated: 23 April 2025

RaYSun

Developing and financing green energy sharing projects in the Benelux and France.

Rue du Marais 49, 1000 Bruxelles, Belgique

Last updated: 23 April 2025

Reno.Energy

Company specialising in energy renovation and new construction.

Rue de Tilff 277, 4031 Liège, Belgique

Last updated: 1 August 2025

RenoWatt

Improvement of the energy efficiency of public buildings.

Av. Maurice Destenay 13, 4000 Liège, Belgique

Last updated: 7 August 2025

RESA

Gas and electricity distribution system operator.

Rue Louvrex 95, 4000 Liège, Belgique

Last updated: 23 April 2025

Rescoop Wallonie

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

Rue Nanon 98, 5002 Namur, Belgique

Last updated: 4 August 2025

Resolia

What we do best: Decarbonising heating and cooling systems via heat networks.

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

Last updated: 23 April 2025

RUTTEN - NEW ENERGY SYSTEM

« RUTTEN New Energy System » est une société belge d'ingénierie en électromécanique qui a développé des solutions innovantes, performantes, durables et écologiques de stockage d'énergie et de cogénération.

1ère Avenue 123, 4040 Herstal, Belgique

Last updated: 23 April 2025

Sense Environnement

SENSE ENVIRONMENT provides a multidisciplinary team, able to understand any problems inherent in the management of energy, air or water, to help reduce the environmental footprint of an organization’s activity.

Rue des Potalles 26a, 4520 Wanze, Belgique

Last updated: 24 April 2025

Sertius

Sertius is a consulting company that is able to evaluate environmental and safety issues within a regional, national and international context and to help clients to act locally following the solutions found.

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

Last updated: 29 January 2024

SFPIM

SFPIM is intent on being a reliable partner for Belgian companies, both SMEs and scale-ups, helping them grow into a reference in their sector by providing “smart capital solutions”.

Av. Louise 32, 1050 Bruxelles, Belgique

Last updated: 16 April 2025

SGI Luxembourg

SGI is a multidisciplinary engineering group with companies in Luxembourg and abroad. Our teams are specialized in the design and management of structures in the fields of Building, Transport and Water.

Last updated: 23 April 2025

Sichem

Sichem provides high quality, innovative coating solutions for the healthcare, energy, hydrogen and sustainable development industries. It uses the latest technologies and techniques to ensure that the coatings meet the unique challenges and opportunities that the customer industry presents and provide the solution it needs.

Rue du Château 70, 6183 Courcelles, Belgique

Last updated: 14 August 2025

Siemens

Siemens Belgium is a top player in Information and Communications, Industry, Energy, Transportation, Building Technologies, Medical Solutions and Lighting.

Guido Gezellestraat 123, 1654 Beersel, Belgique

Last updated: 26 August 2025

Siemens Energy

Siemens Energy is one of the world’s leading energy technology companies. The company works with its customers and partners on energy systems for the future, thus supporting the transition to a more sustainable world.

Guido Gezellestraat 125, 1654 Beersel, Belgique

Last updated: 20 March 2025

Skysun

Skysun funds the solar installations of companies (CAPEX) and provides long-term management (OPEX). Each partner organization has access to solar energy without having to bear the cost of investing or maintenance.

Rue de la Forge 10, 1470 Genappe, Belgique

Last updated: 23 April 2025

Socofe

Together, we imagine and invest in environmental transition solutions for the future of Wallonia.

Last updated: 10 January 2025

Solenco Power

Solenco Power NV is a Belgian SME company active in the R&D, design, manufacturing and distribution of (amongst others) hydrogen based products and services.

Slachthuisstraat 2, 2300 Turnhout, Belgique

Last updated: 24 April 2025

Sotrad Water

Sotrad Water was set up to develop, manufacture, market and install water treatment plants capable of producing between 1m³ and 200m³ of water per hour from surface water.

Rue de l'Artisanat 5a, 1400 Nivelles, Belgique

Last updated: 5 August 2024

SPAQuE

An operator specialising in the remediation of polluted land. By cleaning up polluted industrial wastelands and landfill sites, developing renewable energy projects and participating in redevelopment projects for rehabilitated sites, SPAQUE is positioning itself as a key player in the economic and sustainable development of Wallonia.

Av. Maurice Destenay 13, 4000 Liège, Belgique

Last updated: 20 May 2025

SPGE

The SPGE's main mission is to coordinate and finance the water sector in Wallonia. In consultation with the other water partners, it is primarily responsible for wastewater treatment (from the sewer to the treatment plant) and the protection of water catchments.

Rue des Ecoles 17, 4800 Verviers, Belgique

Last updated: 20 June 2025

SWL

The Walloon Housing Corporation (SWL) oversees, on behalf of the Walloon Government, the supervision, advice, and technical, financial, and administrative support for public housing companies.

Rue de l'Ecluse 21, 6000 Charleroi, Belgique

Last updated: 17 June 2025