Over half a million households will be forced to fit a smart meter or face higher bills within six months when the BBC switches off a 40-year-old radio service.
Around 600,000 energy customers on tariffs where power is cheaper at night will no longer be able to use meters that rely on the Radio Teleswitch Service (RTS), a long-wave radio signal which tells units when to change their fees from high to low.
It means the only way to continue getting power on these billing plans will be to use a smart meter, an internet-connected alternative that has suffered from a troubled rollout and privacy concerns.
The RTS system is common in homes and businesses that are off the gas network and use electricity for heating and hot water. They typically use tariffs such as Economy 7 or Economy 10 which offer cheaper power at night.
RTS meters piggyback on BBC Radio 4’s long-wave channel to communicate with energy firms.
https://uk.yahoo.com/finance/news/600-000-households-forced-fit-130000994.html