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You can express yourself !We would wish this website to really bring reliable and
relevant data about wind energy production and development in
France. Thank you in advance for your cooperation
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Frequently asked questions (FAQ) | |
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Frequently asked questions |
The number of Equ-Home has changed in the tables ; why ?
| From November 2001 to August 2002, the rtio use was 10000 kWh/home. This was not right. A better ratio has been fixed at 2500 kWh/home. |
| In the next month, a more complete information will be diffuse on this ratio. |
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I
can't get the right graph after selection and enquiry : it is always the same graph which is
displayed. What's the matter ?
There are sometimes some problems of refresh. You just have to click on the orange lightning in the header and the write graph will be displayed…… |
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How much for a wind farm ?
| Total costs for a windfarm, including wind turbines and facilities, is today about 1000 € per kW settled, divided between cots wind turbine price (750 €) and site costs with grid connection (250 €). |
| Thus, a 12 MW wind farm will be about 12 millions euros. |
| Annual operation costs are about 1,5 to 2 % of initial investment. |
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How
many kWh does a wind farm produce ?
| Wind farm electric production depends on the site wind speed. For a medium wind at 7,5 m/s, a wind farm will produce about 30 Millions kilowattheures in the year (30 GWh). |
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Is a wind farm noisy ?
| Noises generated by a wind turbine are twice : mechanical noise and aerodynamic noise. Wind turbine manufacturers have decrease the first one with improved elements and better phone isolation. |
| Aerodynamic noise, due to blade rotation, is all the more so high since the wind is strong. Anyway, below about 8 m/s, generated noise is quite low. Above 8m/s, environment noise, due to trees, relief roughness, etc. covers the wind turbines noise. |
| Above 8m/s, environment noise, due to wind blowing through the landscape, covers the wind turbine noise. |
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What are the dimensions of wind turbines installed in France ?
| In France today, the larger wind turbine installed has a power of 3 MW for a rotor diameter of 104 m, on a tower of 95 m height. It is an exception in the extente that teh wind farm (Mardyck) is a test for future off-shore wind farms. |
| Generally, wind turbines installed today on shore are between 1,5 and 2,5 MW unit power, with rotors of 70 to 80 m diameters, on tower of 80 m high. |
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