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 of 2006, 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 kWh, 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 potentially 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 (List Updated 13th Jan 2009)
NEW The two following newspaper articles cover a survey by consultants
Encraft looking into the claims made by small wind turbine manufacturers. They found that on average building-mounted wind turbines used across the UK generate only 0.214 kWh (units) of electricity per day - sufficient to power a few low energy light bulbs. At current electricity prices that equates to a
£33 annual saving (and a
45 year payback period for the turbine). The problem is not with the wind turbines themselves, but with the completely unsuitable locations in which they are typically being installed.
Wind Turbines like David Cameron's Don't Provide Much Electricity - The Telegraph
Many Home Turbines Fall Short of Claims, Warns Study - The Guardian.
See also this article from December 2006:
Renewable energy runs into turbulence on the home front - from The Guardian.
Article Last Modified: 13:57, 13th Jan 2009Comment on this Article
If you have any comments on this article, please email them to
neil@reuk.co.uk.
Recommended Related Articles
People who read this article also enjoyed the following articles:
VAWT Vertical Axis Wind TurbineUnderstand the advantages and disadvantages of VAWTs
Article Last Modified: 15:35, 30th Jan 2007windRoof Mounting of Wind TurbinesMounting micro wind turbines on roofs. It is worth it?
Article Last Modified: 08:43, 2nd Jun 2007windPermanent Magnet GeneratorBuild a wind or water power system with around a PM Generator
Article Last Modified: 11:44, 21st Jul 2008wind | hydroDarrieus Wind TurbinesWhat is a Darrieus wind turbine - Darrieus (VAWT)
Article Last Modified: 16:27, 30th Jan 2007wind | educationCalculation of Wind PowerCalculate the power of the wind hitting your wind turbine generator
Article Last Modified: 15:06, 18th Apr 2008wind | educationElectricity with Stepper MotorsFind out the basics of generating electricity with stepper motors
Article Last Modified: 17:07, 10th Jun 2008windSavonius Wind TurbinesWhat is a savonius wind turbine - savonius (VAWT)
Article Last Modified: 12:31, 23rd Jul 2008wind | educationCalculate kWh Generated by Wind TurbineKnowing average wind speed and rotor size of a wind turbine estimate kWh of electricity generated per year
Article Last Modified: 15:58, 8th Mar 2007wind | educationWindbelt Cheap Micro Wind GeneratorFind out more about Windbelt - an affordable efficient micro wind generator
Article Last Modified: 13:56, 18th Oct 2007wind | newsD400 Wind GeneratorFind out more about the D400 Wind Generator from Eclectic Energy ltd
Article Last Modified: 17:07, 19th Jan 2007wind
|
|
|
