Urban Ag in Berlin: Fresh from the Roof
A new project in Berlin, Fresh from the Roof (Frisch vom Dach), plans to install a 2-acre aquaponic farm on the roof of an unused factory in the heart of the city. The farm’s harvest will be distributed right from the factory building, activating the property at street level as well.
Aquaponics, a type of farming that’s been around since the 1970s, creates a symbiotic 2-level system between fish and plants, with plants above purifying water for the fish farm and the excretions of the fish below providing essential nutrients to the plants. This type of farm uses only about 5% as much water as traditional fish farming. The low resource intensity of this model is particularly appealing, as many urban agriculture and green roof designs require too much energy to be useful in a resource-poor future.