At the former Schenkenschans landfill site, and on top of a twelve-metre-high hill surrounded by lots of greenery and water, a lightweight and energy-neutral office building has been erected. The building is part of the Leeuwarden Energy Campus, where knowledge, experiments, innovation and production in the field of sustainable energy come together. It focuses primarily on the production of green energy both for its own use and for the city of Leeuwarden. For the interior, refurbished materials were used as much as possible. For example, an old gym floor has been reused and the chairs are made of recycled PET bottles. They chose to use FSC certified wood for the window frames and the floor and wall construction, and we were also allowed to supply western red cedar for this project, which was used for the slats. The building is a winner in the Green Architecture category of the Green Good Design Award and has also won first prize in the Vredeman de Vries Architecture Award 2020.