Consumers Disappointed With Micro Turbines
Consumers Disappointed With Micro Turbines
Roof-mounted domestic wind turbines disappointing consumers
wind | newsSince
B and Q started selling Wind Turbines during the summer, many people have taken the plunge and invested £1500 in a green alternative source of energy promising 30% reduction in electricity bills. Many commentators have written about how unrealistic promised power yields from these
roof-mounted micro wind turbines, but now the consumers themselves are expressing their disatisfaction.
Donnachadh McCarthy (seen on BBC2's
It's Not Easy Being Green) told Adam Vaughan of The Guardian, "
I've had my second one for three months now - the first one (a 400 Watt Stealthgen D400) was vibrating the house too much - and so far it's powered one energy-saving bulb for around three hours a day. It's created a total of 1.6 kilowatts, which isn't even 20p worth of electricity.".
At that rate it would take well over 1,800 years for this
Windsave 1000 to cover its sale price!
Urban areas are sites of
turbulent wind - not the friend of
horizontal axis wind turbine generators which are better suited to open spaces.
Vertical axis wind turbines (VAWT) are far better able to cope with erratic winds, but their manufacture for urban settings is still very much in its infancy. With the
Windsave 1000, regular wind speeds of around 20mph are necessary if you are to generate any significant amount of power (100+ Watts), but these winds very rarely occur in an urban setting. In addition, turbulence caused by nearby buildings and trees causes any wind to constantly change direction leaving the
wind turbine chasing the wind rather than extracting power from the wind.
More and more people are coming to the realisation that small domestic wind turbines fitted onto the ends or roofs of properties can never be economical, and that turbine induced vibrations passing through masonary are both annoyingly noisy and structurally damaging.
When real world
wind speeds are taken into account, the wattage generated is far far lower than the 1kW promised by micro-wind turbine manufacturers. In most urban situations, a small array of roof-mounted
PV Solar Panels or some
solar roof tiles will offer
far more Watts/£, have no moving parts, maintenance requirements, noise issues, or potential to damage the structural integrity of your home.
Related Links
Renewable energy runs into turbulence on the home front - from The Guardian.
Article Last Modified: 14:42, 15th Jan 2007
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