Heat Network Zone Boundary Consultation

The City of London Corporation is supporting a phased delivery of heat networks across the Square Mile, where they can provide the lowest cost solution to decarbonise heat for buildings. 

Please refer to our Low-carbon heat networks page for more information on heat network development in the Square Mile. 

Preparing for Heat Network Zoning

The UK Government plans to introduce Heat Network Zoning Regulations in 2026, with the ambition that at least a fifth of UK heat will come from heat networks by 2050. Around 3% of UK heat demand is currently supplied by heat networks.

Heat network zoning is the process of identifying and designating areas as heat network zones and then developing heat networks within them. Designating an area as a heat network zone means that the Heat Network Zoning Regulations will apply within that area. Zoning designates areas where heat networks are expected to provide the lowest-cost, low-carbon heating solution.

Identification of heat network zones across England is evaluated using a National Zoning Model - a data-led spatial energy model developed by the UK Government’s Department for Energy Security and Net Zero.

The City of London has been identified as a potential heat network zone.

The City of London Corporation is seeking to designate the whole of the local authority area as a heat network zone and is holding a public consultation to gather feedback on the proposed zone boundary.

Consultation materials

The following consultation materials are available at the bottom of this page:

• Consultation Overview Document - Includes a detailed map of the indicative zone boundary, and comprehensive information about heat networks, heat network zoning, and the consultation process.

• FAQs – Frequently asked questions about heat networks and this consultation, as well as a glossary of key terms.

• Buildings List – An indicative list of buildings which would potentially be required to connect to a future heat network within the proposed City of London heat network zone*.

*Please note that the buildings list provided at this stage is indicative only. It is based on draft regulations and data sources currently available. The buildings list does not confirm any requirement to connect; any future connection obligations would be subject to designation decisions, regulations and the exemptions process.

How to participate in the consultation

The consultation is open from 29 June to 12 August 2026.

Feedback to the consultation can be provided by completing the online form at City of London Corporation – Heat Network Zone Boundary Consultation.

If you require the consultation questions in a different format, please email the Energy Planning Team.  

A webinar will be hosted at 3pm on Tuesday 14 July to explain the consultation and to provide an opportunity to raise questions. Register to attend the webinar here.