Wind turbines mounted on town houses like David Cameron’s often do not provide a great deal of electricity because of a lack of wind in urban areas, according to research into the new technology.
Well, yes, we know this.
Manufacturers claim some of the new micro turbines can provide 30 per cent of a household’s electricity needs. However, the most wide-ranging study to be carried out in the UK so far found that on average the wind turbines only generate 214 watt hours per day, including when the turbine is switched off for maintenance or due to failure. This is enough electricity to power four low energy lightbulbs for a day or less than five per cent of a household’s daily electricity needs.
Actually, it\’s worse than this. Some disagree of course:
But Alex Murley, of the British Wind Energy Association, said small and micro wind turbines could provide more than 10 per cent of the UK’s electricity needs if sited correctly.
He said: “Although this may be the first trial to look at micro-wind turbines within urban environments, low samples sizes, extremely poor sighting and patchy data renders the trial unrepresentative of the wider sector. Clearly micro-wind turbines do not work everywhere, but the UK is the windiest country in Europe, and there are literally millions of excellent sites waiting for sensible application of this successful technology – If correctly sited and installed, micro-wind turbines can cut bills, cut carbon and deliver real economic, and environment benefits.”
Well, perhaps, if they are indeed correctly sited. Badly sited ones, like those in just about any urban area of the country, actually produce so little electricity that there are more emissions from their manufacture than are saved from their operation.
Increasing emissions, whatever one\’s thoughts on climate change, really don\’t sound like a method of combatting said climate change.