Looking up at a wind turbine rotor against a clear blue sky, with MuteSkin on the blade trailing edge

Technology · MuteSkin®

A new class of wind turbine noise reduction technology

Overview

Less noise. More power. Same simplicity.

MuteSkin® is a new class of technology that uses permeability to reduce turbine noise significantly more than current solutions. This can increase annual energy production (AEP) by up to 8% on noise-constrained turbines.

It is easy to install as an add-on to the blade trailing-edge using standard methods. No additional maintenance is required, and it lasts the lifetime of a turbine.

MuteSkin® can be included with new turbines or retrofitted to existing ones. With its straightforward installation procedure MuteSkin® quickly translates into significant commercial benefits for OEMs and operators alike.

It is easy to install as an add-on to the blade trailing-edge using standard methods. No additional maintenance is required, and it lasts the lifetime of a turbine.

MuteSkin finlets standing on a mounting strip

How it works

A better way to reduce noise at the source

Turbulent pressure fluctuations

reach trailing edge

Noise radiates from trailing edge,

propagating forwards due to directivity

Permeability reduces the pressure jump

at the trailing edge

Less noise radiated

Untreated trailing edge

applied

Incoming airflow

Surface pressure fluctuations

weakstrong

Sound level

lowhigh

Large-eddy simulation results, conducted internally.

MuteSkin® uses a patented permeable structure to reduce trailing-edge noise, typically the dominant noise source on wind turbines. The permeability enables pressure communication between the flow along the pressure and suction sides of the blade. This lowers the pressure jump at the trailing edge, which significantly reduces the noise radiated.

The permeable structure is combined with design elements that provide the scattering effect of serrations. MuteSkin® achieves a superior overall noise reduction with this combined approach. In addition, it has a minimal impact on blade aerodynamics and loads to ensure turbine performance is unaffected.

performance

New horizons for noise reduction

Up to 3 dB(A)

noise reduction

vs. serrations

Poul la Cour Tunnel

Conference paper

Turbulent boundary layer trailing-edge noise reduction with permeable blade extensions at full-scale conditions

Hartog et al. · International Conferences on Wind Turbine Noise, 2025 · Copenhagen

Download PDF

Commercial Benefits

Unlock the potential of your turbines

Noise is a rapidly growing, major constraint for onshore wind. Reducing noise with MuteSkin® helps you unlock the potential of your turbines:

More AEP from new and existing turbines

More capacity per site through repowering and denser layouts

Unlocking sites previously closed off by noise limits

Faster, lower-risk permitting for new projects

Improved community acceptance near wind farms

Up to +8%

AEP vs. serrations

For noise-constrained turbines currently fitted with serrations. AEP increases are typically 2-4% per dB(A) overall noise reduction.

Implementation

Ready to deploy, easy to maintain

Installation

Installation with standard methods for rotor blade add-ons such as serrations, both on new turbines and as retrofit to ones in service

Operation

Passive operation, minimal aerodynamic impact, and no additional maintenance requirements

Qualification

Durable materials qualified for long-life blade add-on applications; developed & produced in accordance with ISO 9001 and APQP4Wind

Integration

Applicable across turbine platforms and rotor classes, with design adaptation to blade geometry and operating envelope

Work with us

Integrate MuteSkin® into your turbines

or see

Acoustic Insights™

if you need to understand a different noise issue first

technology@muteskin.eu