A heat network (which can also be referred to as district heating) supplies heat or cooling to consumers. This heat or cooling is supplied through the transfer of chilled water, heated water, or steam which is produced at a central hub and distributed via a network of pipework. A large range of technology can be utilised at the central source of production. Some examples of this technology can be: Combined Heat and Power (CHP) plants. Boilers fuelled on gas, oil, biomass and more. Shared air, ground, and water source heat pumps.