Grønlikaia is one of Oslo’s most prominent development project of our time in Norway. The project has a unique location on the coast, close to the city centre of Oslo, and extensive nature- and parklike areas on land and at sea. The area is a former industrial port. The development plans will give new housing, business and public spaces, including 1,500 new apartments, 4,000 new workplaces and a kilometre stretch of seaside promenade, connecting Grønlikaia to the rest of the city. New housing developments must meet minimum Blue-Green Factor performance requirements determined by the regulation plan. The Blue-Green Factor is a performance standard designed to provide a minimum of regulating ecosystem services and habitat in the built zone. 

The Grønlikaia Digital Twin Project will test a ‘digital twin model’ to create an accurate and transparent tool for Hav Eiendom to test the effect of blue-green measures in real-time.  Specifically, the digital twin model will be used to visualize and report the Blue-Green Factor (BGF). A standardised value is given to blue- and green elements such as rain gardens, green roofs and existing vegetation, and then divided on the total development area. This gives a numerical value which is the total BGF. In Oslo, BGF is a minimum requirement to ensure a basic ecosystem service performance of new builds.