Unmetered communal and district heating schemes are now subject to heat network regulation (effective 27 January 2026). For those operating such schemes, proactive compliance assessment isn't optional. In this blog, we explain what’s changed, who this affects and what to do.
What has changed
It’s no secret, Ofgem now regulates heat networks across Great Britain and Operators and suppliers must meet statutory obligations covering fair pricing, billing, complaints, vulnerable-consumer support, financial resilience and continuity of supply. Operating a heat network is longer a facilities-management or estates responsibility, it’s now a regulated activity.
Existing operators and suppliers benefit from deemed authorisation, but that doesn't exempt them from compliance. You must meet the relevant authorisation conditions and register with Ofgem's Heat Networks Digital Service by 26 January 2027. Operating or supplying heat without the necessary authorisation after that date may become a criminal offence. Breaches of the conditions can mean significant penalties, enforcement directions and mandatory customer compensation.
Understand your role first
Before anything else: are you an operator, a supplier, or both?
An operator owns or controls the physical network; the energy centre, boilers, pumps, distribution pipework and infrastructure. A supplier charges residents for heating and manages billing, tariffs and complaints. Many organisations (housing associations, local authorities, landlords, managing agents) hold both roles.
The critical point is that regulatory responsibility stays with the authorised organisation. If you outsource billing, metering or maintenance to a contractor or managing agent, you don't outsource accountability. If they fail to meet requirements, Ofgem may still hold you responsible.
Metering is now the default
- The "Open" building classification has been removed in Great Britain
- Cost-effectiveness assessments no longer apply in Great Britain
- Metering is now the default unless technically infeasible
- Individual consumption metering is required in viable and new-build properties
- Heat cost allocators no longer satisfy the metering obligation
- Replacement meters must accurately measure, store and display consumption
- Northern Ireland operates under the previous arrangements
This means an unmetered scheme cannot continue simply because it was previously classified as "Open" or because an earlier assessment didn't support installation. You need to reassess your position against current rules.
Our metering team at Switch2 can help you with surveying of schemes to understand exactly what you need to put in place to be compliant, along with potential funding opportunities available.
Why unmetered schemes create compliant risk
Ofgem's fair-pricing framework requires charges to be cost-reflective, efficient, transparent and reasonable.
For metered homes, variable costs (fuel) are recovered through unit rates; fixed costs appear in standing charges. For unmetered homes, charges get apportioned using proxies such as floor area, occupancy or similar measures. The methodology must be explainable, verifiable and defensible against Ofgem's six fair-pricing principles.
Without individual consumption data, problems accumulate:
- Residents can't understand how their charge was calculated
- Low users subsidise high users
- You struggle to demonstrate cost-reflective pricing
- Consumption disputes become harder to resolve
- Energy waste and unusual usage stay hidden
- Residents have no incentive to reduce consumption
- Complaints escalate to the Energy Ombudsman
The Energy Ombudsman can investigate disputes about estimated consumption, failure to install required meters, inaccurate readings, standing charges and billing transparency. A complaint that reaches them is already a signal that something in your scheme needs attention.
Compliance goes beyond metering
Installing a meter is necessary but not sufficient.
Operators and suppliers must also provide:
- Clear, documented tariff methodologies
- Transparent unit rates and standing charges
- At least 30 days' notice of tariff increases
- Back-billing limits (twelve months standard, eighteen if heat is bundled with rent)
- A formal complaints procedure
- Registration with the Energy Ombudsman
- A Priority Services Register for vulnerable customers
- Fair debt-management processes
- Accurate records of meters, billing, outages and assets
- Ofgem data-reporting compliance
- Deemed contract terms where agreed terms don't exist
- Continuity planning and asset registers
For organisations whose primary role is housing management, property management or local-government service delivery, this represents a significant operational shift.
Our compliance team is on hand to help support audits on the above. If you are already a Switch2 client, you can relax as the above has all been done for you.
How to approach this
If you operate an unmetered heat network, your next steps are:
- Review your regulatory position. Are you an operator, supplier or both? Do you hold deemed authorisation?
- Assess your current metering arrangement. Is metering truly infeasible, or has your situation changed since the previous assessment?
- Evaluate your tariff methodology. Can you justify current charges against Ofgem's fair-pricing principles?
- Identify the gaps. Which of the compliance obligations above do you currently meet? Where are the shortfalls?
- Plan the transition. If metering is needed, what are the technical and financial steps? How will you communicate with residents?
This is substantial work, but it's not insurmountable. The organisations that move first will have time to implement changes sensibly. Those that wait will face a compressed timeline. Again, we can help with all the above! Drop us a message and our team can support you through to compliance.
Switch2's experience
We have worked in residential heat network metering, billing and operations for over 40 years. We're not just a metering and billing provider, we're an Energy Services Company (ESCo) and heat supplier operating within the same regulatory environment as our clients, which shapes how we approach compliance work.
We've helped organisations work through regulatory-readiness reviews, unmetered-portfolio assessments, meter upgrades, billing and tariff design, customer communications, Priority Services Register implementation, complaints handling and handle Ofgem reporting. We maintain networks and monitor long-term performance.
Rather than coordinating multiple suppliers and managing risk between them, clients can work with a partner that understands the complete relationship between technical performance, billing, customer service and regulatory accountability.
The time to act is now
Regulation is live. Metering is the default. The registration deadline is 26 January 2027.
If you operate an unmetered heat network, now is the time to assess your position and start planning. Speak to us Switch2 about reviewing your portfolio and creating a practical route to compliance.
