What does this mean for heat networks?
Although Ofgem won’t take over formal regulation until January 2026, the Energy Ombudsman (EO) will begin reviewing customer complaints from April 2025.
Who can raise complaints?
The EO can only step in after a heat supplier’s internal complaints process has been exhausted. That said, many suppliers may not currently have a formal complaints process in place - something the EO and DESNZ are aware of. We’ve encouraged a “soft landing” approach for suppliers unfamiliar with the process or not yet covered by the Heat Trust.
What happens if a supplier doesn’t register?
Without registration, the Energy Ombudsman can’t assign cases to the right network - but it's now a legal requirement. Not registering could risk enforcement action down the line.
What will the Ombudsman review?
Billing disputes
Service or supply issues
Delays, missed appointments or poor communication
Unresolved complaints escalated beyond the supplier’s internal process
Will this involve costs?
Yes, similar to other schemes, the EO applies:
What support is available?
You can access the Energy Ombudsman Supplier FAQs HERE.