The Silo is a sustainable centrepiece of Copenhagen’s redeveloped North Harbour. The old grain storage silo from 1962 was transformed in 2017 and now houses both apartments and public spaces.

The original silo’s inherent qualities made it a resource to be reimagined, rather than industrial waste. 2,740 m³ of concrete was reused in the renovation, the equivalent of 380 tonnes of embedded CO₂. Leftover concrete from windows, decks and doors has been reused to make seating and podiums in the area surrounding the building and is a characteristic detail in the interior of the apartments. The old silo was not isolated. The upgrade to current energy standards was achieved by maintaining the silo’s rawness inside and fitting the outside with a well-insulated façade clad in galvanized steel elements, thereby creating an efficient sculptural overcoat. After securing the roof and the bays, the establishment of new technical installations followed.

To repurpose and preserve structures in built environments is a commitment to sustainability. Not only in terms of the materials and CO2 emissions saved, but also in terms of caring for the cultural heritage by emphasising the value of aesthetic and lasting design. The Silo’s mix of private and public functions is also an expression of social sustainability. The renovated building does not just take up space but gives back to its surroundings by providing new, shared and accessible areas for the community.