The Scotsman cartoon: Energy bosses defend prices
One executive also denied that prices had been put up ahead of any freeze promised by an incoming Labour government.
MPs on the Energy and Climate Change Committee fiercely questioned the companies about their pricing policies and the impact of soaring bills on millions of consumers.
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Hide AdGuy Johnson, external affairs director of Npower, which has announced average rises of 10.4 per cent, said the largest driver of price rises had been the cost of the so-called climate obligation on power firms.
Illustration by Iain Green
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