Key points
- Compliance touches at least three teams in every organisation – even small ones. Someone is already handling billing, someone manages the plant, someone deals with residents.
- Most of the work is already happening informally. What is missing is the structured documentation Ofgem will ask to see.
- Senior management must sign off on the Readiness Pack, Financial Resilience Statement, and Supply Continuity Plan – these cannot be submitted without board-level approval.
Select your role to jump to your documents, or scroll to see the full breakdown.
Heat network compliance under the 2025 Regulations touches every part of your organisation. Finance is already issuing bills. Operations is already maintaining the network. Customer services is already handling resident enquiries. What Ofgem authorisation requires is the structured documentation behind all of it – and clear accountability for who produces what.
This guide maps every compliance document to the team or role that should own it, identifies where cross-team input is needed, and flags the documents requiring board-level sign-off. The goal is simple: when Ofgem asks for evidence, everyone knows exactly where it sits.
The five functional areas
Compliance documents map to five functional areas. In every heat network operator – regardless of size – these functions exist. A housing association with two networks still has someone managing finances, someone looking after the plant, and someone dealing with residents. The difference is whether the compliance documentation behind those functions is formalised and audit-ready.
1. Compliance and regulatory
This team owns the authorisation process itself. They coordinate the overall compliance programme, maintain the master evidence file, and act as the primary contact with Ofgem. They are accountable for ensuring every document is completed, current, and audit-ready.
- HNO Readiness Pack (E&W or Scotland) Owner
- Ofgem Data Reporting Tracker Owner
- Staff Training Register Owner
- Complaint Log Register Reviewer
2. Finance and commercial
Finance owns the documents that demonstrate financial viability and billing compliance. The Financial Resilience Statement requires access to management accounts, insurance policies, and funding arrangements. The Model Compliant Bill and Heat Supply Agreement need someone who understands the tariff structure and billing cycles.
- Financial Resilience Statement Owner
- Model Compliant Bill Owner
- Heat Supply Agreement Owner
- HNO Readiness Pack (financial sections) Contributor
3. Operations and technical
Operations owns the documents covering supply resilience, network condition, water quality, and metering. These require detailed knowledge of the physical infrastructure, emergency procedures, and maintenance history that only this team holds.
- Supply Continuity and Step-In Plan Owner
- HNTAS Assessment Register Owner
- VDI 2035 Water Treatment Register Owner
- TR1 Metering Compliance Register Owner
- HNO Readiness Pack (network and technical sections) Contributor
4. Customer services
Customer services owns the consumer-facing documents and the registers that track day-to-day consumer interactions. The Consumer Welcome Pack is issued to every new consumer at or before first supply. The Priority Services Register identifies and supports vulnerable customers. The Complaint Log captures every complaint from receipt through to resolution or Energy Ombudsman escalation.
- Consumer Welcome Pack Owner
- Priority Services Register Owner
- Complaint Log Register Owner
- Heat Supply Agreement Contributor
- Model Compliant Bill Contributor
5. Senior management and board
Senior management does not typically complete compliance documents day to day, but certain documents require board-level sign-off before submission to Ofgem. The Readiness Pack contains formal declarations about the organisation’s compliance position. The Financial Resilience Statement asserts financial adequacy. The Supply Continuity Plan commits the organisation to specific emergency response arrangements.
- HNO Readiness Pack Sign-off
- Financial Resilience Statement Sign-off
- Supply Continuity and Step-In Plan Sign-off
- Ofgem Data Reporting Tracker Reviewer
Full responsibility matrix
The table below shows every document against every functional area. Owner means primary accountability for completing and maintaining the document. Contributor means the team provides input or data. Reviewer means the team reviews or signs off.
| Document | Compliance | Finance | Operations | Customer services | Senior management |
|---|---|---|---|---|---|
| HNO Readiness Pack | Owner | Contributor | Contributor | – | Sign-off |
| Financial Resilience Statement | Contributor | Owner | – | – | Sign-off |
| Supply Continuity Plan | Contributor | – | Owner | – | Sign-off |
| Model Compliant Bill | – | Owner | – | Contributor | – |
| Heat Supply Agreement | – | Owner | – | Contributor | – |
| Consumer Welcome Pack | – | – | – | Owner | – |
| Priority Services Register | – | – | – | Owner | – |
| Ofgem Data Reporting Tracker | Owner | Contributor | Contributor | Contributor | Reviewer |
| Staff Training Register | Owner | – | Contributor | Contributor | – |
| HNTAS Assessment Register | – | – | Owner | – | – |
| VDI 2035 Water Treatment | – | – | Owner | – | – |
| TR1 Metering Compliance | – | – | Owner | – | – |
| Complaint Log Register | Reviewer | – | – | Owner | – |
Small teams, same obligations
Most heat network operators in the UK run one to three networks. The team might be small, but the compliance obligations are identical to a portfolio operator running fifty. Ofgem does not scale its requirements to match your headcount.
In practice, though, the work is not falling on one person. Even in a three-person operation, the functions are already split: someone in finance or accounts is issuing heat bills, a building or site manager is looking after the plant room and responding to outages, and a housing officer or resident liaison is handling complaints and new move-ins. The compliance documentation formalises what these people are already doing – it does not create an entirely new workload from scratch.
What small teams typically lack is a coordination layer. No one is pulling it all together, checking that network IDs match across documents, or making sure the emergency contacts in the Supply Continuity Plan are the same ones the customer services team are giving to residents. That coordination role – usually taken on by whoever is leading the authorisation process – is where the Readiness Pack becomes essential. It acts as the master checklist across every other document area.
Documents that share data
Several documents reference the same underlying information. Getting this right avoids inconsistencies that Ofgem may flag during assessment. The key overlaps are worth understanding: network names, IDs, and consumer numbers in the Readiness Pack must match the entries in the Supply Continuity Plan, Priority Services Register, and Data Reporting Tracker. The organisation name, registered address, and Ofgem reference number must be consistent across every document. Complaint volumes reported in the Data Reporting Tracker should reconcile with the Complaint Log Register. Staff training records in the Staff Training Register should evidence the competencies referenced in the Supply Continuity Plan’s emergency response section.
When multiple teams contribute to different documents, a single compliance lead should verify consistency across the full set before submission.
Getting started
Start with the HNO Readiness Pack. It acts as the master gap analysis across every other document area – once you have completed it, you will know exactly which documents each team needs to produce and where the gaps are. From there, prioritise the three documents requiring board sign-off (Readiness Pack, Financial Resilience Statement, Supply Continuity Plan) because approval cycles take time.
The operational registers (HNTAS, VDI, TR1, PSR, STR, Complaint Log) are ongoing – the sooner your teams start populating them, the stronger your evidence base when Ofgem assesses your application.
All 14 documents are available individually or in bundles. The Compliant Bundle (£895) includes all eight core documents – everything needed for authorisation and ongoing compliance, ready to assign across your team. View the full product catalogue for individual pricing.