The London Heat Network Manual

The Mayor of London has launched a revised manual to support the delivery of decentralised energy schemes in the capital. The ‘London Heat Network Manual’, which builds on the 2013 ‘District Heating Manual for London’, provides practical guidance on the development and delivery of heat networks in London.

The manual, downloadable here, is intended to support local authorities, energy services companies, developers and planners by providing additional guidance, building on user feedback from the original manual, in areas including:


  • Technical design principles and concepts for the physical infrastructure of a heat network
  • Contract structures, procurement strategies and management
  • Tariff structures
  • Planning policy and typical requirements of local planning authorities
  • Future development opportunities

Heat remains the single biggest reason we use energy in the UK. The majority of our heat is produced by burning fossil fuels, with around 80 per cent coming from gas alone, and heat is responsible for around a third of the UK’s carbon dioxide emissions.

Heat networks operating as part of a decentralised energy system have the potential to supply low to zero carbon energy in dense urban areas.  They stand to play a key role in supporting the Mayor’s target to achieve 25 per cent of London’s energy supply from decentralised energy sources by 2025.

London already has a number of schemes in the pipeline which will help demonstrate the efficiency and value of heat networks.  Projects such as the Lee Valley Heat Network, which, once complete, aims to provide over 5,000 homes with all the heating and hot water they require through harnessing the connecting heat sourced from the nearby EcoPark, demonstrates just how effective these local schemes can be.

For information on the Mayor's decentralised energy programmes (non-media), please contact: