Question 1

Do I need to register my heat network with Ofgem?

Accepted Answer

Yes. Under the Heat Networks (Market Framework) Regulations 2025, which commenced on 27 January 2026, all heat network operators and suppliers in Great Britain must obtain authorisation from Ofgem and register their networks. This applies regardless of network size — from a communal boiler serving 15 flats to a large district heating scheme serving thousands of properties. The only exceptions are networks that fall below the regulatory threshold defined in the Regulations, and certain specific exempt categories. Ofgem’s digital registration service opened in April 2026 and is open now, with a registration deadline of 27 January 2027. Operating a heat network without authorisation after the transition period is a criminal offence.

Question 2

What happens if I don’t register or comply?

Accepted Answer

Ofgem published its Heat Networks Enforcement Guidelines on 20 February 2026. The regulator has a range of enforcement powers, including financial penalties of up to £1 million or 10% of annual turnover (whichever is greater), consumer redress orders requiring direct compensation to affected consumers, compliance orders mandating specific remedial action, and ultimately revocation of authorisation — after which continued operation becomes a criminal offence. Ofgem can also access premises to inspect metering and infrastructure. Operators who can demonstrate documented policies, proactive compliance monitoring, and prompt self-reporting of issues are in a significantly stronger position if enforcement questions arise.

Question 3

What documentation do I need for Ofgem authorisation?

Accepted Answer

Ofgem’s Authorisation Conditions require documented policies and procedures covering consumer protection (complaints handling, vulnerability support, disconnection procedures), fair pricing and billing transparency, financial resilience and governance, security of supply, data protection, and staff training. The exact requirements depend on your role (operator, supplier, or both) and whether you operate a large network or a small scheme. In total, there are 29 Authorisation Conditions (15 in Section A, 12 in Section B, and 2 in Section C). Our Policy Document Generator creates operator-specific documentation mapped to the applicable Authorisation Condition paragraphs.

Question 4

What is the Heat Network Technical Assurance Scheme (HNTAS)?

Accepted Answer

HNTAS is Ofgem’s technical standards framework for heat networks. It sets performance requirements for network design, installation, and operation, including maximum supply temperature limits, minimum efficiency standards, metering accuracy thresholds, and commissioning requirements. HNTAS builds on the existing CIBSE CP1 code of practice for heat networks and establishes key performance indicators (KPIs) that networks must meet. The HNTAS consultation closes on 15 April 2026. Heat network operators will need to demonstrate compliance with HNTAS as part of their authorisation conditions. This includes proper commissioning of Heat Interface Units (HIUs) and ongoing performance monitoring.

Question 5

What is HIU commissioning and why does it matter?

Accepted Answer

HIU commissioning is the process of testing and verifying that a Heat Interface Unit operates correctly within a heat network. It involves following standardised test procedures (typically CIBSE CP1) to measure flow rates, temperatures, differential pressures, and domestic hot water performance. Poorly commissioned HIUs are the leading cause of high return temperatures, which reduce network efficiency, increase fuel costs, and can cause comfort complaints from residents. Under HNTAS, networks must demonstrate that HIUs meet specific performance KPIs (CC-KPI-09 through CC-KPI-13). Our HIU Commissioning Tool provides a mobile-first digital platform for conducting and recording these tests, with automatic pass/fail validation against your site’s design parameters.

Question 6

How do I set a fair heat tariff?

Accepted Answer

A fair heat tariff must be cost-reflective, transparent, and not excessive. Under Ofgem’s Authorisation Conditions A6 (Fair Pricing) and A7 (Cost Allocation), operators must demonstrate that their pricing recovers legitimate costs — including fuel, plant efficiency losses, distribution losses, maintenance, metering, billing, and a reasonable margin — without overcharging consumers. The tariff should also be benchmarked against a counterfactual comparison, typically the cost a consumer would face with an individual gas boiler. Our Tariff Calculator models all these factors and produces compliant unit rates (p/kWh) and standing charges with full methodology documentation suitable for board approval and regulatory scrutiny.

Question 7

How much does compliance documentation cost?

Accepted Answer

Professional compliance documentation through our platform costs between £2,495 and £4,495 depending on the tier selected. By comparison, commissioning a law firm typically costs £15,000 to £40,000, specialist consultancies charge £8,000 to £20,000, and doing it yourself requires 40 to 80 hours of senior management time (an effective cost of £2,000 to £4,000 in lost productivity, with significant compliance risk). The HIU Commissioning Tool uses pay-as-you-go pricing at £3 to £5 per property. The Tariff Calculator is free.

Question 8

Can I use ChatGPT or other AI tools to write my compliance policies?

Accepted Answer

General-purpose AI tools do not have access to the specific regulatory source documents needed for accurate heat network compliance documentation. They cannot reliably cite Authorisation Condition paragraph references, distinguish between consultation drafts and final published guidance, or ensure that all 29 Authorisation Conditions are covered systematically. AI-generated policies risk containing plausible-sounding but incorrect regulatory references, missing entire compliance areas, and failing to reflect the specific requirements of your network type and consumer base. Our platform uses purpose-built templates that have been systematically mapped to every published Authorisation Condition and guidance document. Every regulatory citation has been verified against source material. This is fundamentally different from asking a general AI to “write a heat network complaints policy.”

Question 9

I already have some policies in place. Do I need to start again?

Accepted Answer

Not necessarily. However, most existing heat network policies were written before Ofgem’s Authorisation Conditions were published in their final form (November 2025). Policies based on earlier consultation drafts, Heat Trust voluntary standards, or general housing management templates are unlikely to meet the specific requirements of the Authorisation Conditions without significant revision. The gap between “having a complaints policy” and “having a complaints policy that meets every requirement of the Complaints Authorisation Condition” is substantial. Our platform can be used to generate a complete fresh suite or to identify gaps in your existing documentation against the published requirements.

Question 10

When should I start preparing?

Accepted Answer

Now. The Authorisation Conditions have been in force since 27 January 2026, and Ofgem’s registration service opened in April 2026 and is open now. The registration deadline is 27 January 2027. Operators who delay will face increasing time pressure and limited access to professional support as demand rises. Starting now gives you time to build documentation, train staff, implement procedures, identify operational gaps, and submit your registration before the deadline.

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