Are onshore wind turbines noisy?

Nearly everything with moving parts makes noise, and wind turbines are no exception. Wind farms are very quiet compared to other industrial facilities, but they do produce low-level noise.  


Are onshore wind turbines noisy?

Wind turbines make low-level noise while in operation, but onshore wind farms are always designed to minimise noise to the surrounding environment. Government regulations require that onshore wind farms are built at least 500 metres from the nearest residence.  

Turbine noise explained

A wind turbine generates two kinds of noise. The first is an aerodynamic “whooshing” sound which is created when the turbine blades pass through the air.  

The second noise is mechanical hum that is caused by the generator in the turbine’s nacelle – the large box positioned at the top of the turbine behind the rotors.  

Well-designed wind turbines are relatively quiet while they are in operation, producing noise at about 35-45 decibels (dB) at a distance of 500 metres from a turbine.  

Compared to other commonly heard noises, that is quite low: the noise from an electric tea kettle can range from 79 to 95 dB, a truck driving 30mph comes in at about 65dB, the sound from a kitchen refrigerator is about 50dB, and a quiet office can hum at about 40dB.  

Onshore wind turbine noise explained

Assessment & action

While wind turbines produce low-level sound, studies have shown that the noise from wind turbines does not have negative health impacts at a safe distance.

There is, according to a comprehensive review of environmental noise guidelines for Europe published by the World Health Organisation in 2018, very little evidence available showing adverse health effects of continuous exposure to wind turbine noise. 1

Furthermore, the WHO estimate the “burden on health from exposure to wind turbine noise at the population level to be low.”2

Background noise monitoring and extensive studies are carried out when wind farms are planned to identify the best location for turbines, so that sites are designed to minimise or eliminate any potential disruptions to residents.

At Ørsted, as part of the development of an onshore wind farm project, we always conduct an Environmental Impact Assessment (EIA) and prepare an Environmental Impact Assessment Report (EIAR).

Through that process we identify any potential noise sensitive locations and design the layout of the turbines to minimise noise levels.

We adhere to Ireland’s Wind Energy Guidelines which specify that wind turbine noise should not exceed 45 decibels at sensitive receptors.

Due to strict limitations in Ireland, the closest that a wind turbine can be built to a house is 500 metres. At that distance, noise levels drop to about 35-45 dB.

However, recent projects in Ireland have placed a setback distance of 700 to 800 metres between turbines and residential properties to assure that noise levels are reduced at nearby properties as much as possible.

Decibel levels of an onshore wind turbine

Wind often noisier than the turbines

As the wind energy industry has matured over the last few decades, manufacturers have made great strides minimising the amount of noise the turbines generate. 

The soundproofing on nacelles has vastly improved since earlier models, blades have become much more efficient, resulting in less aerodynamic noise, and gearboxes are now designed for quieter operation. 

As a result, the noise generated by turbines has been reduced substantially in recent years and often the wind itself is noisier than the turbine. 

An image rendering of turbine noise emissions from one of Ørsted’s onshore wind farms.
1) WHO Environmental noise guidelines for the European Region, pg. 84 Environmental noise guidelines for the European Region (
2) Ibid.
Is onshore wind power reliable?
Onshore wind is a highly reliable energy source. Modern onshore wind turbines are so powerful and have such advanced engineering that they can generate clean energy, even when wind speeds seem low. 
Do onshore wind turbines pose a threat to birds?
Well-sited wind farms have limited effects on birds. Onshore wind farms can pose potential risks to birds, but Ørsted does in-depth environmental assessments before building any new wind farms and uses cutting-edge technology to better understand the interaction between birds and turbines so that wind farms can be optimally sited. 
Can wind turbines be recycled?
When wind turbines eventually reach the end of their lifespan after at least 25 years, we recycle up to 95% of what they’re made of. We’ve made a commitment to find the right recycling solutions for the final 5%, too. 
What is the carbon footprint of onshore wind?
Manufacturing and constructing onshore wind turbines does produce some emissions. But these are very small in comparison to emissions from fossil fuels – and vastly outweighed by the emissions saved by using onshore wind power instead of fossil fuels.  
Are onshore wind turbines dangerous to human health?  
Onshore wind turbines do not cause negative health effects. Dozens of independent, peer-reviewed studies conducted around the world have consistently found no evidence that onshore wind farms cause any negative physical health effects.  
Do onshore wind farms harm tourism?  
Onshore wind has become a major source of renewable energy across Europe over the last several decades. There is no evidence that the many onshore wind turbines now dotting rural landscapes put off tourists. On the contrary, many visitors express a positive feeling towards seeing the green transition in action.    
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What is onshore wind power?

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