District energy allows for sustainability and flexibility. A wide variety of energy sources can be used, including fluctuating renewable energy and surplus heat.
A variety of energy sources
District heating is highly flexible regarding the choice of heat source – it can accommodate all heat sources, even fluctuating ones such as wind, solar, and surplus heat from industrial processes. Other heat sources are geothermal heat, different biofuels, and waste incineration. Large district heating systems can have several heat sources, making it possible to switch from one fuel source to another, depending on local situations, price signals, and green ambitions. Therefore, with a district heating system, one does not have to change all the small individual boilers in each house every time new fuel sources become viable and available. This can be done at a central location.