He suggested to the news agency that the company has begun looking at pricing, although no plans for an increase by the provider have been announced.
"Clearly we are looking at pricing. Like everyone, we're affected by rising commodity prices. When we come to a conclusion we'll tell people," he said.
However, another rival energy firm, Scottish and Southern Energy, has stated that it is planning on keeping its prices as low as possible for as long as it can.
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