Master in Energy Technologies - Ghent University

Norrenergi renewed a pipe section in the Stockholm district heating network without excavating or replacing the old pipes. The energy company identified a leaking district heating pipe situated under a road in Stockholm. To replace this pipe section using traditional methods – traffic, including several bus lines, would have been heavily affected, as a large road section would require excavation. Faced with this problem, Norrenergi turned to Pressure Pipe Relining Sweden AB (“PPR”) and decided to use CarboSeal®, a new solution to rehabilitate district heating pipes by relining them.

In cooperation with the International Energy Agency (IEA) and their Technology Collaboration Programme on District Heating and Cooling, the UN environment cities initiative and the representative organizations of the district energy sector the winners of the 7th Global District Energy Climate Awards were revealed during the virtual awards ceremony on November 11, 2021.