Thousands of homes across Britain are still using Radio Teleswitch Service (RTS) meters to manage their electricity use, heating and hot water.
But after 40 years, the system is being phased out – and the reason is simple: the infrastructure behind it is failing and cannot be fixed.
RTS uses longwave radio signals, sent from transmitters that are now so old the components are no longer made.
The operator responsible for the system has warned that the signal is at increasing risk of total failure. If it fails, it cannot be repaired. That’s why the industry – backed by government and Ofgem – has agreed to shut the system down in a controlled way, replacing meters before the signal disappears for good.
Why can’t the signal stay on while suppliers finish the job?
The reality is the signal cannot continue indefinitely. A gradual switch-off avoids the worst-case scenario – where transmitters fail with hundreds of thousands of households still dependent on them.
Suppliers, government and the regulator all agree it’s better to manage the shutdown area by area, replacing meters as they go, rather than risk a national blackout of RTS services.
What happens to customers who still have RTS meters?
Anyone who hasn’t yet had their RTS meter replaced is being urged to book an appointment immediately.
Once the signal is switched off in their area, heating and hot water may stop working – either straight away or later.
Engineers will be on standby to help but the best way to avoid disruption is to act now.
How will vulnerable people be protected?
Vulnerable households will be prioritised. That includes anyone on the Priority Services Register as well as places like care homes, schools and sheltered housing. People with specific needs should let their supplier know when booking appointments.
How will I know when I’m affected?
Suppliers will contact all affected customers in advance. The signal is being switched off in small groups, using unique meter codes. Local councils, MPs and housing associations will also be informed to help spread the word.
RTS meters have served households for decades but their time is up – and switching early is the only way to stay protected.
Facts from Energy UK.
Copyright © 2025 Energy Live News LtdELN