The Cloudburst Valve is a simple solution for homeowners to install themselves. It is activated only during intense rainfalls and discharge the rain water from the roof to the surrounding terrain instead of the sewer, where the capacity is too limited to handle the large and sudden amounts of water.
CALL role and contribution
Full scale demonstration has proved it possible to decouple 40-50 % of roof surfaces in sururban areas, which takes enough pressure off of the sewer system to avoid it from overflowing in many cases.
CALL Copenhagen has helped problem owner and solution provider
- Identify the market barriers and opportunities
- Set up and facilitate a full scale demonstration and documentation project
- Develop a viable business model and implementation plan
- Disseminate results and promote the solution
A system prototype including sales, installation and maintenance procedures has been demonstrated and validated in an operational urban water drainage environment in collaboration with the local water utility company.
The technology is proven capable of increasing the de facto capacity of the surrounding sewer system at a lower cost.
In a Danish context further business model innovation is necessary to overcome regulatory framework conditions challenging the water utility ownership of privately installed system components.