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.
More top news
Cloud for many on Monday and the risk of freezing fog patches to the east which could take a while to clear.
Scarlett Moffatt has been crowned Queen of the Jungle in this year's I'm a Celebrity... Get Me Out Of Here!
Emily Middlemas has been kicked out in the X Factor semi-finals - leaving 5 After Midnight, Saara Aalto and Matt Terry through to the finals