UK heat networks face registration deadline and potential fines

Approximately 13,000 heat networks in the United Kingdom face potential financial penalties and criminal charges if they fail to register with the energy regulator, Ofgem, by January 26, 2027.

Currently, only about 5.5% of networks are registered. The mandate applies to operators controlling physical infrastructure and suppliers responsible for billing and customer service. This includes local authorities, housing associations, and landlords managing communal heating, cooling, or hot water systems.

Ofgem officials have stated that they will use a full range of compliance and enforcement techniques to ensure adherence. The registration process aims to align the sector with gas and electricity markets by mandating transparent billing, fair pricing, and protections for vulnerable households. Data collected from the registration is expected to support arguments for increased government investment through the Heat Network Efficiency Scheme.