More than 820,000 households could see their energy bills soar if their energy supplier doesn't switch their meters in the next few months.
Customers at some of the UK's biggest power companies are still relying on old-fashioned electricity meters which will stop working in April 2024, with Scottish Power, Eon Next and Octopus Energy each having more than 100,000 customers using the legacy equipment.
The so-called RTS meters rely on the Radio Teleswitch Service (RTS), which broadcasts a signal alongside the long-wave channel for BBC Radio 4. Hundreds of thousands of customers on Economy 7 and other multi-rate energy tariffs use these electricity meters, which charge customers cheaper rates depending on the time of day.
