NHH

Transforming black roofscapes into vibrant green biotopes

As part of a strategic sustainability initiative, we conducted a feasibility study for the Norwegian School of Economics (NHH) exploring how their existing rooftops can be transformed into productive and inviting landscapes – combining vegetation, solar panels, food cultivation, and social spaces.

These green roofs have the potential to become valuable outdoor areas on campus – places to enjoy lunch in the sun, gather with colleagues, or connect with nature in the middle of the academic environment.

The main roof is designed with sheltered seating areas surrounded by diverse, climate-adapted vegetation. This layered and varied planting approach creates seasonal interest – from the first sprouts in spring, to the blossom of fruit trees, lush summer growth, and the harvest of vegetables, berries, and fruit in autumn. Over time, the vegetation will develop naturally, with the most resilient species taking hold – creating new urban nature.

Our holistic design approach is rooted in sustainability – integrating climate resilience, biodiversity, circular water systems, food production, and human well-being. Together, these elements form an ecological rooftop system. Rainwater is captured and reused: much is absorbed by soil and plants, some evaporates, some remains in the harvested produce, and excess water is slowed and gradually released. This delays peak runoff and reduces the burden on municipal drainage systems.

The feasibility study was commissioned by NHH’s leadership as part of their long-term sustainability strategy and serves as a foundation for future green infrastructure development on campus.