Van den Berg was selected by the Belgian government Buildings Agency (Régie des Bâtiments/Regie der Gebouwen) and Bruxelles-Energie to connect the castle and the greenhouses of Laeken to the district heating network that is supplied with energy from the waste incinerator in Neder-over-Heembeek. The aim is to reduce the domain’s ecological footprint and to push down the high heating costs.