All you need to know about the Radio Teleswitch Service (RTS) switch off

The Radio Teleswitch Service (RTS) switch off is happening at the end of June 2025 and ’will affect some households that use an older electricity meter to heat their home and hot water.

Find out whether it will affect you and how to get help if you need it.

What is the Radio Teleswitch Service (RTS)?

The Radio Teleswitch Service (RTS) is a system that uses a radio signal to control when certain older electricity meters switch between peak and off-peak rates. It was introduced in the 1980s to support homes using electricity for heating and hot water, especially those:

• In rural areas without a mains gas connection

• Using electric storage heaters, panel heaters, or immersion heaters that typically charge overnight

What is the RTS switch-off?

The RTS system is being phased out as it has reached the end of its lifespan. The service will officially end on 30 June 2025, meaning the technology controlling RTS meters will no longer function.

Once the RTS service is switched off, customers with RTS meters may experience disruptions in their heating and hot water systems.

What are electricity suppliers doing to help?

All electricity suppliers have been reaching out to affected customers to offer a free smart meter upgrade before the RTS service ends. Customers should expect to be contacted by the end of 2024.

If you haven’t been contacted yet, it’s recommended that you get in touch with your electricity supplier to discuss upgrading your meter.

How can I tell if I have an RTS meter?

You may have an RTS meter if:

• There’s a separate switch box near your meter with a radio teleswitch label.

• Your home uses electricity or storage heaters for heating.

• You live in an area without a gas supply, such as rural areas or high-rise flats.

• You’re on a multi-rate tariff, like Economy 7, Economy 10, or Total Heat Total Control, which offers cheaper energy at certain times.

If you’re unsure, contact your electricity supplier, and they’ll be able to confirm whether you have an RTS meter.

What happens if I don’t upgrade my RTS meter?

You’re not required to accept a smart meter upgrade. However, if you choose not to upgrade, your heating and hot water system may stop working properly after the RTS service ends. You could experience:

• Heating and hot water staying on or off continuously.

• Charging occurring at the wrong time, leading to higher energy costs.

Additionally, your supplier won’t be able to accurately record your peak and off-peak usage, which could result in higher electricity bills.

What if I’m unable to upgrade my RTS meter?

In some cases, your supplier may be unable to install a smart meter. If this happens, they are responsible for ensuring that you have a suitable alternative meter and that your service is not disrupted.

If you’re in this situation, speak to your supplier to understand what options are available.