comprised 310 JANSEN geotwin shark geothermal probes for a total bore length of 32,800 metres, over 21,000 metres of connecting pipes, more than 2000 electrofusion fittings and six large-scale manifold chambers [...] also blending in with nearby historical buildings at the same time. With a total floor space of 86,000 m² , the building houses 2500 workstations . The lower floors play host to restaurants, a conference [...] to the building. All in all, this means 32,800 metres of geotwin shark U loops. Using more than 21,000 metres of PE-RT pipes, these heat exchangers were connected to the plant room. In comparison, Lake