In 2010, the buildings were renovated with more insulation, new low-energy windows, new radiator systems and new district heating substations with heating controls connected to Danfoss Portal. There are nine substations covering the 19 apartment blocks.
In 2017, more than 3,000 m² solar PV panels were integrated in the roofs of all 19 apartment buildings. The solar PV system can produce 460 kW solar electricity corresponding to 408,000 kWh per year, covering 37 % of the total electricity consumption in the 432 apartments. At the same time, new LED outdoor lamps were implemented in the area around the 19 apartment blocks as well as in the corridors and basement.
In 2021, storage batteries were added to all the solar panels. They have a storage capacity of between 10 and 30 kWh depending on the number of apartments in each block. In addition, Danfoss Lean Heat system was implemented in all buildings using artificial intelligence to control and monitor the centrally heated buildings.
ProjectZero (developer), Sønderborg Andelsboligforening, Danfoss, Center Denmark, ENFOR, DTU
Technologies and innovations