Over the course of three workshops, this Innovation Lab discussed use cases for trigger based financing for specific groups alongside a wider context of the use of NbS to manage city heat. A very wide range of use cases were identified, therefore a decision was taken to focus on only one. In the second and third workshops, the work drilled down to meeting the needs of rough sleepers in dangerously hot weather. The Lab also assessed the feasibility of applying NbS in urban green spaces.

The initial workshop revealed the diversity of vulnerable groups and the varied settings in which they might be found.  Over a short project related timescale this made it difficult to develop a one size fits all approach to financing and estimating loss.  Therefore a relatively simple use case for financing the needs of homeless people in extreme heat was piloted. A trigger based financing structure was developed.