The boss of energy company E.ON has said any windfall tax in the UK should fall upon "those with the broadest shoulders" as consumers face a doubling in prices.
Michael Lewis, E.ON's chief executive, also said energy regulator Ofgem needed to look again at why prepayment meter customers are having to pay more for their energy than direct debit customers.
"We've lobbied for a social tariff. We would like to see the poorest customers getting a better deal, but in the end this is regulated by Ofgem," Mr Lewis told BBC One's Sunday Morning.
He said the company had surveyed 500 customers and found 71% of people were concerned about their ener...
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