New Heat Network Regulatory Rules Live

As of 27^th January 2026, the Heat Network (Market Framework) Regulations are in force putting many obligations on authorised persons defined as Operators (those with financial control of heat networks) and Suppliers (those with direct customer supply agreements). The full list of Authorisation Conditions published by Ofgem outlining requirements for regulatory compliance can be found here.

Since 1^st April 2025 heat network customers have benefitted from statutory redress and advocacy through the Energy Ombudsman and Citizens Advice. The new rules build on this to ensure fair treatment and better outcomes for heat network customers. Networks with persistent performance issues or high levels of customer complaints are expected to be amongst the first to be scrutinised by Ofgem. Operators and Suppliers should therefore focus on strengthening the way they handle complaints, address service failures and implement robust, compliant management processes.

Ofgem have indicated that its digital registration service will go live in April 2026. Heat Networks must be registered by 27 January 2027, after which authorisation from Ofgem will be required before operating any new network.

The government are consulting on the Heat Network Technical Assurance Scheme (HNTAS) which they plan to launch in 2027. HNTAS will introduce minimum technical requirements that all new and existing -communal (single building) as well as district (multiple buildings) – heat networks will be assessed against. Early preparation for this will help mitigate future compliance risks.

This is a substantial period of change, and many details will continue to evolve as DESNZ and Ofgem publish further guidance. All stakeholders —whether Operators, Suppliers, developers or managing agents—should take proactive steps now to align operations with both current requirements and emerging regulatory intent.

Here are a few priority actions:

• Ensure compliance with the Heat Networks (Metering and Billing) Regulations 2014
• Register with the Energy Ombudsman
• Collate information for Ofgem registration including preparation of a Priority Services Register and Continuity Plan
• Develop a Complaints Procedure that residents are aware of, know how to use, includes steps to resolve issues internally and points to the Energy Ombudsman as a final recourse
• Review heat tariffs to ensure fairness, transparency and appropriate cost allocation
• Assess system efficiency and improve network performance, resolving any long-standing issues
• Ensure heat network management processes and rationale are clearly documented with adequate justification where necessary