If you already operate or supply a relevant heat network, you are already authorised. Relevant existing heat networks must be registered with Ofgem by January 2027. Identify who operates each network and who supplies heat, then provide the required information for those activities.
Operators and suppliers have ongoing reporting requirements. What Ofgem asks for depends on the role performed and the network and consumers concerned. Supporting information can sit across several organisations and systems.
Requirements continue throughout the year and cover billing and transparency, heat supply contracts, pricing and cost allocation, complaints, support for consumers in vulnerable situations, security of supply and financial resilience.