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180,000 tonnes of demolition waste diverted from landfill
8,000 households using neighbourhood biogas networks
35% reduction in raw material imports for participating construction firms
12 peer-reviewed publications on urban circular economy
Berlin's Circular City Lab: Turning Urban Waste into Resources
The Berlin Circular City Lab has developed a scalable model for transforming urban waste streams into construction materials, energy, and food — with measurable results.
Rethinking Waste in the City
Every day, Berlin produces approximately 4,800 tonnes of waste. The Circular City Lab (CCL) sees this not as a problem but as an untapped resource. Since its founding in 2022, the CCL has developed practical, scalable solutions for closing resource loops within the urban environment.
Three Breakthrough Projects
Construction Material Recovery
The CCL's flagship project converts demolition waste into high-quality building materials. Using AI-powered sorting and advanced recycling techniques, the programme has diverted over 180,000 tonnes of material from landfill and reintroduced it into Berlin's construction supply chain.
Neighbourhood Biogas Networks
Working with three Berlin districts, the CCL has piloted neighbourhood-scale biogas systems that convert organic waste into cooking gas and fertiliser. Over 8,000 households now participate, reducing organic waste collection costs by 40%.
Urban Mining Database
The CCL maintains a publicly accessible database of materials stored in Berlin's existing buildings — a concept known as urban mining. Architects and developers can query this database to source reclaimed materials for new projects.
Impact by the Numbers
"A truly smart city does not just digitise its services — it closes its resource loops. That is the next frontier." — Dr. Katrin Weber
On the Smart Cities Hub
The Berlin Circular City Lab is profiled as an organisation on SCH, with direct links to their research publications and open-source toolkits in our knowledge base.