The government has said that energy efficiency policies are already helping to reduce the rise in energy bills.
According to a new report released by the Department for Energy and Climate Change, bills in 2020 will be 11% lower - equivalent to £166 - than they would otherwise have been.
Already dual fuel bills are estimated to be 5%, equivalent to £64, lower on average than they would be without these initiatives, the report says.
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Ann Myatt, who is contesting Jo Cox's former seat, told a hustings: "We've not yet shot anybody so that's wonderful."