The company has announced average price increases of 12.7 per cent and 17.2 per cent on its gas and electricity tariffs respectively.
Commenting on the decision, Mr Di Vita said: "Today's decision was not an easy one. We always try to protect our customers for as long as possible but sadly higher energy prices are a fact of life.
"npower is not alone in facing these higher costs, and we expect other suppliers to follow suit very shortly."
The director of campaigns for UK watchdog energywatch, Adam Scorer, recently also stated that the price increases were "the shape of things to come" for consumers in Britain.
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