OGEO FUND has 7 joined companies:
- Publifin SCIRL ;
- IILE-SRI (Intercommunale d’Incendie de Liège et Environs, Service Régional d’Incendie – Intermunicipal Fire Service of Liege and Region, Regional Fire Service) ;
- CILE (Compagnie Intercommunale Liégeoise des Eaux (Liege Intermunicipal Water Company) ;
- City and CPAS of Seraing – public agents ;
- City and CPAS of Seraing – staffmembers ;
- Province of Liege – Members of the Provincial Gouvernment ;
- AIDE.