Written by Tim Holman – Head of Consultancy, MSc, MEng, CEng, MEI
Tim directs TEAM’s consultancy practice, applying 25+ years in strategy, audits, metering and compliance to deliver robust, audit‑ready results for clients.
Ofgem has published new guidance setting out regular data reporting obligations for Heat Networks, representing another milestone in the rollout of the Heat Networks regulatory framework. The guidance is intended to support authorised heat network suppliers and operators in meeting their ongoing obligations under the “Provision of Information to the Authority” authorisation condition and clarifies what data must be reported, by whom, and when.
What the Guidance Covers
The guidance describes the data points that Ofgem expects to be reported on a regular basis for Heat Networks, specifying which authorised persons including suppliers and operators, are responsible for providing each data set. Its purpose is to give organisations operating Heat Networks greater clarity on the scope of reporting required and to support consistent compliance across the sector.
Alongside outlining the required data, the guidance explains how Ofgem will request information from Heat Networks, including the approach it will take to collecting and managing submissions. It also sets out submission periods and deadlines, covering both quarterly and annual reporting requirements, enabling Heat Network organisations to plan reporting activity with greater certainty.
Reporting Processes, Periods and Deadlines
Alongside defining the required data points, the guidance sets out how Ofgem will request data submissions, including the mechanisms through which information will be collected. It also provides detail on submission periods and deadlines, covering both quarterly and annual reporting cycles, giving organisations greater certainty over when data must be prepared and submitted.
Importantly, the guidance addresses submission exceptions, clarifying circumstances in which certain data points may not be applicable or required. This reflects feedback received during consultation, where stakeholders highlighted the need for proportionality and clarity around reporting expectations.
Backdating and Financial Data Reporting
The guidance also covers backdating requirements for existing heat networks, an area that attracted stakeholder attention during the consultation process. Ofgem confirms how historic data should be handled, providing additional clarity for organisations that are already operating networks and transitioning into the regulated regime.
In addition, Ofgem outlines expectations around financial data reporting, reinforcing the regulator’s intent to gain visibility over the financial operation of heat networks. This information is expected to play a role in supporting oversight and informing future regulatory decisions, including those related to consumer protection and fair pricing.
Supporting Activities and Next Steps
Ofgem notes that the publication of the guidance will be accompanied by “supporting activities” on regular data reporting, signalling that further engagement or assistance will be made available to the sector. While specific details of these activities are not set out in the guidance itself, the reference suggests that Ofgem recognises the operational challenge of introducing new reporting requirements and intends to support compliance as the framework settles in.
For organisations involved in Heat Networks, the guidance underlines the importance of ensuring that data collection, governance and reporting processes are robust and aligned with expectations. As Ofgem builds a more comprehensive evidence base through regular reporting, suppliers and operators should expect increasing transparency and scrutiny across the Heat Networks sector.
More broadly, the publication of this guidance highlights the continued progress of Heat Networks regulation and the growing role of data in improving oversight, consistency and consumer protection.