Together with Ackermans & van Haaren, the CFE group invests in sustainable initiatives, via participations in Rent-A-Port and Green Offshore. Rent-A-Port develops greenfield projects for the development of ports and related industrial zones, mainly in Vietnam. In addition, Rent-A-Port develops battery parks to store green energy. One of these parks, BStor in Bastogne, Belgium, is the largest battery park in the world in terms of storage capacity. Green Offshore has interests in the development and operation of Belgian offshore wind farms.