If you heat your home with electricity and are on a tariff like Economy 7 or ComfortPlus, you might have something called a Radio Teleswitch Service (RTS) meter. These meters have helped manage heating and water systems since the 1980s, but the technology behind them is now being phased as it is reaching the end of its operational life.
From 30th June 2025, the national signal that controls RTS meters will begin to shut down – but don’t worry. Thanks to new action from the UK government, this change will now happen in a gradual and carefully managed way to protect households, especially those with vulnerable residents.
This updated guide explains what’s happening and how to make sure you stay warm and supported.
What Is an RTS Meter?
RTS meters are designed to help manage electricity use by switching between different rates during the day and night. This helps households benefit from cheaper electricity at off-peak times – particularly useful if you use storage heaters or electric water tanks.
You may have one if:
- You have an electric-only heating system
- You’re on a time-of-use tariff, like Economy 7 or Economy 10
- There’s a black box or switch marked “Radio Teleswitch“ near your electricity meter
- Your electricity bill shows two “S” numbers (supply numbers)
If you’re not sure, a quick call to Greener Homes or your electricity supplier can clarify things.
What’s Changing – and What’s Not
The infrastructure powering RTS meters is now obsolete and will be gradually turned off. Originally, this was set to happen nationwide from 30th June 2025. However, the government has now stepped in to ensure a slower, phased rollout – starting with only a small number of homes and businesses in specific areas.
Key Updates:
- No immediate disruption will occur on 30th June
- Your heating and hot water should continue working as normal.
- Suppliers are being closely monitored by Ofgem and the Department for Energy Security and Net Zero to make sure this transition is smooth.
- Vulnerable households are being prioritised.
What Should I Do?
There’s still a lot you can do to get ahead of the curve:
- Check your meter – If you think it’s an RTS model, ask your supplier to confirm.
- Book a meter upgrade – Your supplier will install a new meter, usually a smart meter, free of charge.
- Respond to letters or calls – Suppliers are contacting affected customers. Don’t delay if you hear from them.
- Keep your appointment – Upgrades are typically done in a single visit.
Even with the new phased timeline, it’s wise to take action sooner rather than later.
Why Upgrade?
The most common replacement is a smart meter, which does everything an RTS meter does and more. Benefits include:
- Automatic readings, so no need to send meter readings manually
- Accurate bills, based on actual usage
- Access to smart-only tariffs
- Potential to better monitor and reduce energy use
If your home isn’t suitable for a smart meter, your supplier must still provide a compliant alternative and must ensure you’re “no worse off” under your new tariff than you were before.
Tenants and Vulnerable Households
- Tenants: If the energy account is in your name, you can arrange the meter upgrade yourself – no landlord permission needed, though keeping them informed is still a good idea.
- Vulnerable residents: Suppliers are prioritising upgrades for households with elderly residents, young children, or anyone with additional needs. If this applies to you, let your supplier know so they can factor it in.
Where to Get More Help
- Greener Homes in Lancashire – If you’re in Lancashire and have questions about your heating system, electricity tariff, or what this change means for you, we’re here to help. Our expert team provides free, impartial advice to support residents through changes like these.
- Ofgem’s RTS Taskforce Update: For updates on how the energy sector is working together to support this transition.
- Citizens Advice Guidance: If you have questions, need support, or aren’t sure what your rights are, Citizens Advice offers free, impartial advice.
A Simple Switch for a Smoother Future
While RTS meters have served households well for decades, the upgrade to modern meters is a positive step. It ensures your heating and water systems keep working reliably and gives you access to newer, more flexible energy options.
If you think you might be affected, a quick call to your energy supplier is all it takes to get started.