Speaking to the BBC’s Today Programme, Iain Conn said that the company’s average margin after tax is just £52 per customer, meaning that Centrica would "absolutely be losing money" if the proposed cap comes into effect and would have to "address" its costs and "look at service".
Over the weekend, Damian Green, the Work and Pensions Secretary, confirmed that the Government would cap energy prices if it wins the general election in June. It’s believed that the plans could cut gas and electricity costs by £100 a year for as many as 17 million families.
But Mr Conn said that, while the market is currently "not perfect", the plan “"will probably have unintended consequences".
"I think there are some at the heart of the Government who just don't believe in free markets,” he said. “I find that concerning at a time when this market is highly competitive and the UK is seeking to forge a new future relying upon free trade with the rest of the world," he added.
Ministers have in recent months toughened their stance on energy suppliers after five of the big six energy providers announced price increases of up to 10 per cent.
Theresa May last month vowed to crack down on spiralling energy prices saying that "the market is not working as it should".
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