# Heat Network Check

> Do the heat network regulations apply to you? Ofgem now regulates heat networks in Great Britain, with registration due by 26 January 2027. Check your position.

## Key facts

- Operators and suppliers of relevant heat networks in Great Britain must register with Ofgem by 26 January 2027, giving details of the network's organisation, ownership, financial resilience and consumer protection arrangements (Ofgem).
- All operating heat networks in Great Britain were automatically authorised to continue supplying, which Ofgem calls deemed authorisation, so there was nothing to apply for at the start of the regime.
- The duty to notify heat networks to DESNZ under the Heat Network (Metering and Billing) Regulations 2014 was revoked in Great Britain on 27 January 2026 and remains in force only in Northern Ireland (gov.uk).
- Since 27 January 2026 all heat networks in Great Britain must register with the Energy Ombudsman redress scheme, giving customers free and independent dispute resolution including for unplanned outages (gov.uk).

## Key pages

- [Do the heat network regulations apply to you?](https://heatnetworkcheck.co.uk/): the main tool, answer above the fold.
- [Heat network registration with Ofgem: who must register by January 2027](https://heatnetworkcheck.co.uk/heat-network-registration-ofgem/): Who must register a heat network with Ofgem by 26 January 2027, what the service asks, the networks that are out of scope, and what applies after the date.
- [Heat network authorisation: what Ofgem requires and the conditions](https://heatnetworkcheck.co.uk/heat-network-authorisation/): How heat network authorisation works under Ofgem: deemed authorisation for existing networks, the conditions in force since 27 January 2026, and new networks.
- [Ofgem heat network reporting: the data and when it is due](https://heatnetworkcheck.co.uk/ofgem-heat-network-reporting/): Ofgem heat network data reporting after registration: quarterly and annual windows, the six areas of data Ofgem requires, backdating to April 2026 and extensions.
- [Heat Network (Metering and Billing) Regulations: what changed in 2026](https://heatnetworkcheck.co.uk/heat-network-metering-and-billing-regulations/): The GB notification duty and the cost-effectiveness tool were revoked on 27 January 2026. Metering obligations narrowed but did not disappear, and NI is unchanged.
- [Heat network complaint support and customer rights, under Ofgem](https://heatnetworkcheck.co.uk/heat-network-customer-rights/): Ofgem regulates heat networks for service, reliability, transparent bills and fair pricing, and every GB network must be in the Energy Ombudsman redress scheme.
- [Heat network duties in Great Britain: in force, scheduled, or revoked](https://heatnetworkcheck.co.uk/#data): original data table, updated 2026-10-28.
- [Full site content as markdown](https://heatnetworkcheck.co.uk/llms-full.txt)

## Data

- Heat network duties in Great Britain: in force, scheduled, or revoked. Methodology: Compiled on the updated date above from Ofgem's heat networks regulation pages, Ofgem's Comply with heat networks consumer protection regulations service page, and the DESNZ guidance 'Regulations: heat networks (metering and billing)' on gov.uk, last updated 11 February 2026. Status is stated as at the updated date and this regime is phasing in, so check the two source pages before relying on any row. Nothing here is a substitute for the authorisation conditions themselves, which Ofgem publishes in full.
- Last updated: 2026-10-28. Every figure cites its source inline.
- Source: Ofgem, heat networks regulation: https://www.ofgem.gov.uk/energy-policy-and-regulation/policy-and-regulatory-programmes/heat-networks
- Source: Ofgem, comply with heat networks consumer protection regulations: https://www.ofgem.gov.uk/energy-regulation/low-carbon/heat-networks/comply-with-heat-networks-consumer-protection-regulations
- Source: Ofgem, get advice on heat networks: https://www.ofgem.gov.uk/information-consumers/energy-advice-households/get-advice-heat-networks
- Source: gov.uk, regulations: heat networks (metering and billing): https://www.gov.uk/guidance/heat-networks
- Source: Heat Network (Metering and Billing) Regulations 2014: https://www.legislation.gov.uk/uksi/2014/3120/contents
- Source: Heat Networks (Market Framework) (Great Britain) Regulations 2025: https://www.legislation.gov.uk/uksi/2025/269/contents
- Source: Heat Networks (Market Framework) (Great Britain) (Amendment) Regulations 2026: https://www.legislation.gov.uk/uksi/2026/7/contents/made
- Source: Energy Act 2023: https://www.legislation.gov.uk/ukpga/2023/52/contents
- Source: Ofgem, who should register (heat networks): https://www.ofgem.gov.uk/low-carbon/heat-networks/who-should-register
- Source: Ofgem, how to prepare for registration: https://www.ofgem.gov.uk/low-carbon/heat-networks/how-prepare-registration
- Source: Ofgem, heat networks registration guidance (January 2026): https://www.ofgem.gov.uk/sites/default/files/2026-01/Heat%20networks%20registration%20guidance.pdf
- Source: Ofgem, authorisation application arrangements consultation (5 October 2026): https://www.ofgem.gov.uk/sites/default/files/2026-10/Heat-networks-regulation-authorisation-application-arrangements-consultation.pdf

## Citation

Cite as: "Heat network duties in Great Britain: in force, scheduled, or revoked", Heat Network Check, https://heatnetworkcheck.co.uk/ (updated 2026-10-28).

## About

- Heat Network Check is an information site. It is not affiliated with Ofgem, DESNZ, the Energy Ombudsman or any government body, and nothing here is legal advice. This regime is phasing in and the source pages linked above are the authoritative version, so confirm the current position with Ofgem and DESNZ before acting on anything here.
- Operated by heatnetworkcheck.co.uk. Contact: enquiries@heatnetworkcheck.co.uk