– Sarah Harrison, Ofgem senior partner
Many npower customers will have noticed a serious deterioration in service levels over the last year.
The huge growth in complaints about npower is wholly unacceptable and is an issue that Ofgem takes very seriously and is why we intervened in this case.
npower's commitment that its customers will not lose out financially as a direct result of the company's billing system problems is important and we will expect npower to do all it can to identify and rectify such cases.
Energy supplier npower has written to millions of customers to apologise after what was described by Ofgem as a "serious deterioration" in customer service. His chief executive said he will be receiving a "much reduced" bonus because of the failings.