Heat networks deliver cost effective, low carbon heat, in the form of hot water or steam, from the point of generation (usually an energy centre) to the end user through a network of insulated pipes. Networks vary in size and length, carrying heat just a few hundred metres between homes and flats, to several kilometres supplying entire communities and industrial areas.

The cheapest, safest and most secure form of energy is the energy we do not use. That is why energy efficiency must be allowed to compete on equal terms with new supply capacity. Energy efficiency means the construction of fewer new generating plants and reduced network infrastructure investment combined with greater resilience and lower carbon emissions.

Crucial in supporting the UK's transition to lower-carbon generation. Demand Side Respond (DSR) is where energy users change their electricity consumption patterns in response to a signal or incentive from the network operator. The ability to tap into flexibility sources ensures power supply and demand are matched, that the grid is not overloaded and that supplies are at the correct voltage and frequency across the network.