Households will face rising fuel bills as Britain shifts to a low-carbon strategy, Energy and Climate Change Secretary Ed Miliband warned.

Mr Miliband - who publishes the Government's renewable energy strategy on Wednesday - rejected reports that the change could add £230 a year to the average household fuel bills.

"I don't recognise those figures. I don't think those figures are accurate," he told BBC1's The Andrew Marr Show.

However, he insisted that failure to act would be even more costly as climate change produced more extreme weather conditions - from floods to heat waves.

"I think there are upward pressures on energy prices whatever route we go down," he said.

"We will have a lot more of those extremes of weather and that has got big human costs in Britain. It has also got massive financial costs as well, far outweighing any costs of making the transition."

Mr Miliband described the renewable energy strategy as a "route map" setting out the changes that the Government will need to make to achieve its legally binding targets of reducing carbon emissions by 34% by 2020 and by 80% by 2050.

He said that there were three elements to the strategy - renewables such as wind power, nuclear power and clean fossil fuel energy through carbon capture and storage.

"It does mean big changes in people's lives," he said.

"That does mean some costs for transition. My job is to counter those effects as much as I possibly can, helping people with energy efficiency.

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