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Cleaning Wind Turbine Blades With Helicopter

HeliTechnics, after several years of trials and upgrades, opens a new phase in the Renewable Energy maintenance sector. Backed up by a 20 years stretching back aerial works experience, we elaborated a cleaning windmill blades with helicopter method, which involved not only the way to carry out the operation, but also the appropriated equipment.

Now, HeliTechnics has developed a maintenance method for wind turbines, a cleaning method of wind turbine blades by helicopter. Our new service aims to provide an effective, practical and economical alternative to clean the wind turbine blades, using machinery adapted to the needs and technicians specialized in cleaning work by helicopter.

Is known a lot of factors could provoke the airfoil break of the blades: snow, ice, pollution, humidity, dust, insects, etc.  It is known that a good maintenance of wind turbines and, specially, of the blades can increase the efficiency as much as 20% or as much as 100% in case of frost or snow on its blades.

The maintenance of these wind turbines is something assumed in a wind turbine operational cost, even though, the actual methods are very slow, expensive and involve a high risk for the personnel.

Depending on the blades sizes and the wind conditions, HeliTechnics could clean or de-ice 24 blades in one day with full efficiency and no component spoilage.


HeliTechnics is the first worldwide company to clean and de-ice wind turbine blades with helicopter.

With a track record stretching back 20 years, we offer our experience in Live Line Washing Insulators With Helicopter in countries like Morocco, Greece, Spain, South Korea, France, Cyprus and Algeria among others, with our high performance equipment and properly trained, qualified and experienced personnel.

HeliTecnics has the INTERNATIONAL PATENT (PCT) for the method and the equipment of cleaning wind turbine blades.

We work on wind turbines to help you minimize the down-time and increase efficiency, which contributes to a higher and more consistent production of your wind turbines throughout the year. Our goal is to offer higher efficiency with high quality within the widest security.

HeliTechnics also offers the inspection service, The pre- and post- cleaning inspection are very important, the operation is done using drones equipped with an Ultra HD camera and a thermal camera that allows not only a visual inspection, but go further and look for defects not detected at first sight, this thermal inspection is especially useful in new wind turbines with an electrical resistance incorporated on its blades to prevent ice and snow build-up.

The pre-inspection gives information on the kind of dirt on the blade, then you can estimate the cleaning time, let you see any damage, imperfection, crack or hole in the blade, a fact that decreases the efficiency and cleaning cannot be carried out. In subsequent images pre-cleaning inspections can be viewed.

In the post-inspection you can observe the state of the blade after washing, both in terms of the aesthetic of the blade (shiny, without dirt) as for imperfections.

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  • HeliTechnics works worldwide.
  • HeliTechnics is the first company in the world to develop this activity.
  • We install our equipment in the selected helicopters in the working country and give exploitation licenses.
  • HeliTechnics is also provider of these equipment. Rental and sale of equipment.
  • The operation is made by specialized technicians.
  • Training courses for helicopter pilots and operators.
  • HeliTechnics always works with native pilots and operators.
  • Our equipment is authorized by EASA and is internationally recognized.
  • HeliTechnics has the INTERNATIONAL PATENT (WO2015ES70567 for the Method and Device for Cleaning Windmill Blades Using a Helicopter).

In the table attached, could see the profit that could be obtained increasing the wind turbine production, this study is made for a 2MW turbine. With an increment of 0.7%, less in some countries, the blades’ cleaning is worthwhile and the periodic cleaning by our method is fully justified .

Remember that, for example, in Spain the production could increase from 4% to 10% for each wind turbine cleaned and in northern Europe countries from 2% to 7% immediately after the cleaning.

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