Paul Massara, npower CEO, said:
I know that any increases to household bills are always unwelcome, and this is not a decision that we have taken lightly.
We will continue to take steps where we can to reduce the impact of the external influences on energy bills.
We only aim to make around 5 pence in every pound (5%) in our retail business which we feel is a fair return for delivering reliable energy to consumers and for the risks that we bear.
More top news
It's one of most sparsely populated regions in Europe, but the Highlands is being fiercely contested in Scotland’s independence referendum.
Researchers in Boston have created a 'robot cheetah' that they hope will be able to reach top speeds of 30mph.
UK trials of a vaccine for the Ebola virus began today - but some experts complain that the response has been a long time coming.