Andy Burnham is being urged to adopt a clean power plan that could cut household energy bills by £500 a year after vowing to give families “breathing space” on the cost of living.

New analysis from energy giant SSE says the best way to reduce bills is to speed up Britain’s shift to clean power and encourage households and businesses to switch from fossil fuels to electricity.

The report finds that greater use of electricity, through measures such as electric vehicles and heat pumps, could cut the average household bill by around £500 by 2040, rising to roughly £1,000 a year by 2050.

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Switching to an electric vehicle alone could reduce a family’s overall energy costs by about 30 per cent, the analysis suggests, with a heat pump delivering a further 5 per cent saving.