11th Edition of the International Conferences on Wind Turbine Noise: Conference Proceedings

A total of 44 research articles and 4 open forums provided insight into topics such as technological noise reduction methods, low-frequency noise, noise assessment, public acceptance, annoyance, health implications, and the regulatory landscape.

Significant attention was given to technological innovations aimed at reducing noise emissions. These include refined blade designs (e.g. trailing-edge modifications), and better predictive models and measurements (e.g. in wind tunnel) to estimate noise sources and sound propagation. Experts emphasized that quieter turbine technologies and scientific knowledge related to it can enhance community acceptance without sacrificing efficiency. However, the fact that the size of wind turbines is continuoulsy growing, inevitably affecting their overall environmental impact, was also pointed out several times during the conference.

Infrasound exposure and its potential health effects on nearby residents are still regarded as an ongoing concern. Researchers presented new studies on how low-frequency noise travels, affects sleep patterns, and possibly contributes to stress or other health symptoms.

Assessment and measurement of wind turbine noise remain complex scientific and regulatory challenges. Noise is not just about volume: factors such as frequency content, modulation, tonalities, and weather conditions all influence how noise can be measured and perceived. Presenters examined various methods used to assess sound levels around wind farms, including real-time monitoring, modeling tools, and newly developed measurement technologies. These assessments are critical to setting safe noise limits and ensuring wind farms compliance with local regulations. Importantly, several researchers discussed the limitations of current noise standards, which often focus on average A-weighted sound levels and may overlook short-term variations or low-frequency components (or other aspects) that can potentially be more disturbing for residents. This relates to the above-mentioned importance of assessing noise correctly according to its actual impact on the environment and humans. There was a growing support for moving toward a more holistic soundscape approach that includes not only decibel levels but also the overall human experience of noise in a given environment.

The issues of public engagement and policy, recognizing the importance of transparency during planning and evidence-based noise immission levels were discussed. The role of non-acoustic factors, such as visual impact, trust in developers, and possible financial involvement (although this can also have an opposite effect on acceptance) was also acknowledged in influencing public perception and annoyance levels.

To sum up, WTN2025 reaffirmed the need for a balanced development: expanding wind energy to combat climate change while ensuring that its implementation respects local communities. As wind turbines grow in size and their deployment scales up, the conference underscored the importance of sound science and technology, thoughtful design, and public dialogue in achieving a sustainable energy future