Cold district heating networks, also known as anergy networks or heating networks 4.0*, use heat from the ground, water and air to supply neighborhoods and urban districts. The temperatures in the network are significantly below those of conventional district or local heating systems. Cold district heating networks can be fed entirely from renewable energy sources. Therefore, they offer a good opportunity for a sustainable, potentially CO2- and emission-free heat supply - and thus for climate protection and the achievement of climate protection goals.
*In the English literature, there is already reference to the "5th generation district heating and cooling".