Not all customers will have a smart meter by the end of 2020, Ofgem has admitted.

“It is clear that smart meters will need to continue to be installed beyond 2020,” the regulator said in an update on suppliers’ rollout plans. It initially sent back six of the 2019-20 plans submitted by the 13 larger energy suppliers which have to roll out meters, saying there were “significant concerns” over delivery. One revised plan is still under discussion.