Friday, March 29th 2013, 4:15 AM EDT
Families will be paying almost £300 a year in green energy taxes by 2020.
The levy will more than double until a quarter of every pound spent on electricity goes on wind, solar, nuclear or home insulation schemes.
Energy Secretary Ed Davey insisted last night that households will be better off thanks to the benefits of electricity-saving initiatives.
But families will be able to claw the money back only if they buy more efficient domestic appliances and boilers.
The average power bill is now £1,267 – with £112 of that going on green taxes, including an £18 wind farm subsidy.
By 2020, green taxes will have risen by more than 150 per cent, ensuring each family contributes £286, according to the Department for Energy and Climate Change.
It reckons that by then households will be saving £452 a year by taking up schemes to lower energy use and by switching to more efficient kettles, fridges and TVs.
The ministry also hopes smart meters, which track energy consumption, will alter consumer behaviour and lower consumption.
But John Constable, of the charity Renewable Energy Foundation, said: ‘DECC is clearly embarrassed by the terrifying costs of its ever-growing range of green policies, and is covering up with a whitewash of wildly optimistic assumptions about energy efficiency.
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