SIX in ten of energy customers with a smart meter found the devices stopped working when they switched supplier, a study finds.
More than 13.5million smart meters have been installed with the vast majority the first-generation SMETS1, says Which?
These can go ‘dumb’ when a customer switches, meaning they stop sending readings, or the display showing usage stops working properly.
Sarah Threadgould of Which? said: ‘Our advice is for energy customers with a first-generation meter is not to be discouraged from switching, as they could still save money.’
A third of people with smart meters said it helped reduce their consumption — but a fifth said it had increased.
Robert Cheesewright, of rollout campaign Smart Energy GB, said: ‘We are well on the way to solving these issues.’