Inspection and technical operations

ENERTRAG Operations is the competent partner for operations management and inspections of energy plant throughout Europe. 

At home in the wind industry for over 30 years, ENERTRAG Operation offers commercial and technical expertise in the operational management of renewable generation plants, substations and transfer stations. Services for the balancing energy market, innovative hybrid power plants, photovoltaic systems and stationary battery storage systems are also part of the portfolio. 


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Drone inspection

Rotor blade inspection and LPS measurement via drone: Not only more accurate, but also more efficient.

Regular maintenance and inspections are necessary to maintain the value of a wind turbine - for example, a precise inspection of the rotor blades. Innovative drone technology not only protects employees, but also offers a higher error detection rate thanks to excellent image quality and autonomous flight patterns. 

Operations management

Our technical operations management services include plant monitoring, plant management, and risk assessment for renewable energy plants. Customer-specific thematic priorities can be set that are transparent and comprehensible to all. 



ENERTRAG Operation's inspection department is specialized in various areas of inspection: Machine inspections, gearbox and rotor blade inspections, vibration measurements and also DGUV-V3 inspections. The accreditation according to DIN EN ISO/IEC 17020 underlines the high level of quality.  


  • Continuous yield optimization through ongoing optimization measures. 
  • Automated 24/7 system monitoring enables an early response to potential alarms and faults. 
  • Transparent reporting for mixed plant portfolios to make informed decisions. 
  • Rapid intervention in the event of error messages minimizes downtimes and ensures the efficiency of the systems. 
  • Detailed inspection reports with specific recommendations for action. 
  • Seamless monitoring and documentation ensure transparency and traceability of every activity. 
  • Minimization of downtimes through targeted measures for continuous energy production. 
  • An accredited inspection body for reliable and qualified inspections. 
  • Thanks to a comprehensive partner network, the range of services can be customized and expanded for customers. 
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As a technology-driven company, ENERTRAG Operation continuously focuses on increasing the efficiency of renewable energy plants, thus keeping the price-performance ratio stable despite volatile market conditions.

The company

ENERTRAG Operation is a subsidiary of ENERTRAG SE and bundles the technical expertise in the operating phase of renewable energy projects under one roof. The portfolio includes plant management as well as inspection and engineering services. 

Many years of expertise, highly qualified teams and accredited processes form the basis for the efficient and profitable operation of over 1,200 wind turbines at several locations in Europe. Thanks to the diversity of its turbine fleet, ENERTRAG Operation has the expertise to test and optimize the performance of different turbine types. This gives customers the opportunity to put together their own individual service package from a broad portfolio. This is also reflected in flexible pricing. 

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Partner Network

ENERTRAG Operations relies on a network of experienced partners to respond individually to customer needs and offer tailored service packages.  

The service portfolio ranges from the efficient management of wind fields and PV parks to the inspection of wind turbines in the event of damage to the continued operation of old systems or drone inspections.

UL International

- Leading in the field of meteorological modelling, load modelling and certification of wind turbines - Accredited according to ISO IEC 17065 - On the expert advisory board of the BWE - LTE certifications issued in accordance with ANSI UL4143 - Offices in over 140 countries with more than 500 experts and 35 years of experience

Sulzer & Schmid Laboratories AG

- Founded in 2016 in Zurich, Switzerland - Focus on innovations in the energy services sector - Developer of the 3DX™ Blade Platform for transparent asset management for wind turbine rotor blades - End-to-end processes utilise autonomous drones and offer state-of-the-art image analysis tools on a browser-based interface

What customers are saying

"We have been commissioning ENERTRAG Betrieb GmbH with the technical management of our wind farms for many years. In addition to the fast response time, we are impressed by the fact that all measures and processes are transparent and comprehensible. The inspection team also knows exactly what is important when it comes to inspections and tests. That saves money in the long term."

Thomas Uhlmann

WindStrom Windpark Verwaltungs GmbH

"ENERTRAG Betrieb GmbH is a reliable and competent partner for us in technical operations management. The always cooperative and punctual cooperation is convincing."

Christiane Pieper

Head of Press and Marketing at reconcept GmbH

"For the development and expansion of our renewable portfolio, we are focussing in particular on resilient and cost-effective operational management. In ENERTRAG Betrieb GmbH, we have found a competent partner who understands power generation from renewable energy as a power plant operation and is a pioneer in establishing high individual standards. Our requirements profile with regard to occupational safety, quality and technical implementation will certainly be met."

Dr. Markus Hakes

Managing Director Trianel Erneuerbare Energie GmbH, Trianel Onshore Wind GmbH

"ENERTRAG has been our technical operations manager right from the start and we work very well together - a very reliable partnership. We want to drive forward the energy transition. That's why the drone flight to check the blades is an innovative technology that we are happy to use."

Stefan Babis

Managing Director of Stadtwerke Buxtehude

Certified quality

The advantage of an accredited inspection body: Tested once, accepted everywhere. ENERTRAG Operation provides services of the highest quality with corresponding certifications. 

Accreditation in various test procedures according to DIN EN ISO 17020

ENERTRAG Powersystem is a type C inspection body accredited by the German Accreditation Body (DAkkS) in accordance with international standard DIN EN ISO/IEC 17020 for the scope specified in the certificate with the number D-IS-18273-01-00. Status: July 2022

Quality management according to ISO 9001:2015

With this certification, ENERTRAG SE proves that all requirements of the corresponding standard (DIN EN ISO 9001:2015) are fulfilled, that the company works in a process-oriented manner and has established risk-based thinking.

TÜV NORD test certificate

In its inspection dated 25 January 2022, TÜV NORD assessed the quality of the ENERTRAG Betrieb procedure for lightning protection testing on wind turbines using drones and confirmed its quality.

ENERTRAG Operation locations 

ENERTRAG Operation is the ideal partner for the operational management and inspection of renewable energy systems throughout Europe. Contact us now to find out more:




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ENERTRAG utilises electricity from wind and solar power as well as green hydrogen to create modern renewable power plants that supply people and regions.

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