What is the Radio Teleswitch Service (RTS)?
The Radio Teleswitch Service (RTS) uses a radio signal to switch electricity meters between peak and off-peak tariffs. There are just over 1,500 active RTS meters in Portsmouth.
RTS allows energy suppliers to offer different tariff rates; so that consumers can make use of cheaper off-peak tariffs to charge their heating and/or hot water systems up overnight.
Typically, the system sends a radio signal to the meter, which then uses this signal to switch between the different tariff rates. Introduced in the 1980s, RTS system is now outdated and unmaintainable and is reaching the end of its operational life which is why it’s being turned off.
How do I know if this affects me?
If you’re unsure whether you have an RTS meter, contact your electricity supplier.
The equipment usually looks like a big black box next to your meter.
You may have an RTS (pictured to the left) if you have:
- A switch box labelled “Radio Teleswitch” or “RTS”
- Electric heating or storage heaters
- No gas supply
- Cheaper electricity at specific times
Upgrading your meter will help maintain your heating and hot water systems and ensure accurate billing after the RTS switch off.
Making the switch
On 30 June 2025, all RTS meters will be switched off.
The signal to the meter will be switched off, meaning they will stop functioning properly, disrupting heating and hot water systems.
Without this information, suppliers may incorrectly charge for electricity usage meaning your bills can be more expensive.
If you decide not to switch, the heating and/or hot water provisions in your home or business could be affected. You may find that your heating and/or hot water is continually left on or off, or the charging-up happens at the wrong time of day.
Your electricity supplier won’t be able to confirm how much electricity you have used during peak or off-peak times, which means your electricity costs could be much higher than before.
You will need to contact your energy supplier to find out if you need a new meter.
You may be eligible for a smart meter, to find out the benefits of having one click here.
If you need any advice or support you can contact our team.