Be warned: When choosing among dozens of models and complex features, your guides might be commissioned salespeople who have an incentive to load you up with expensive options you might not need.

WSJ: Conquering Retirement: Hearing-Aid Shopping Tips

But a DECC source told the BBC's Chris Mason that Mr Hayes "does not make final decisions on this" and that he had "totally over-egged" things when he suggested reviews will be commissioned into the noise that turbines create and their relationship with the landscape.

BBC: Wind farms: Row after minister says UK has 'enough'

But four out of nine coal power stations and a lignite unit currently under construction are unlikely to be commissioned as originally scheduled in 2011 and 2012, due to a problem with boiler construction.

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