Labour's planned freeze on energy prices would hamper investment, the chief executive of npower has said.
"I think it is already having a dramatic effect already. What it's doing is freezing investment," Paul Massard told BBC Radio 4's Today programme.
Mr Massara, who earlier claimed 'Old and draughty houses' were to blame for the UK's rising energy bills, also criticised the Government's plans to reform green levies.
"They made some technical changes on what carbon we actually have to deliver. That reduced the bills by about £53," he said.
"We don't want them to scrap it because actually we think that insulating old people's homes and insulating homes which are leaky is the right thing to do.
"What they should have done is taken all of it into taxation because actually it is unfair that everybody gets hit by the same way in the terms of insulating people's homes."
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