Strong leadership team at Deutsche WindGuard Systems

- Leif Rehfeldt and Falko Feßer develop growth for WONDER and AI solutions

Leif Rehfeldt and Falko Feßer, Managing Directors Deutsche WindGuard Systems GmbH
© Deutsche WindGuardVarel/Berlin (renewablepress) - Leif Rehfeldt has joined the management team of Deutsche WindGuard Systems GmbH. The 40-year-old now jointly heads the company, which is part of Deutsche WindGuard Group, together with its long-standing managing director, Falko Feßer.

“At our Berlin office, our team of software development experts has been creating success stories for 25 years with the high-performance wind farm management system WONDER,” says Leif Rehfeldt. “With an eye on the global expansion of renewable energies, we are consistently driving forward the strategic development of our software solutions to systematically conquer new markets.”

WONDER supports technical managers, operators and asset managers in controlling their renewable energy portfolios transparently, in making well-founded decisions and in overseeing long-term asset operation. The modular structure enables individual adaptation to existing structures and processes. In addition, the interactive inspection app WONDER onSITE transfers inspection results from site visits directly into the software. Besides, as an internal service provider, Deutsche WindGuard Systems develops customised AI solutions for various applications within the corporate group.

“The innovative advancement of WONDER is based on technological progress, customer and industry feedback, and the experience of our technical management team in Varel,” explains Falko Feßer. “Development and integration of tailored AI solutions for our wind farm management system and various other areas of application profit from unique synergies created by the expertise of Deutsche WindGuard’s approximately 60 different services. This is our key differentiator. With more than ten years of experience in business development across our entire group, Leif Rehfeldt contributes outstanding industry and market knowledge. His commitment sends a clear signal regarding our international growth strategy.”

Following his master's degree in International Administration and Global Governance at the University of Gothenburg in Sweden, Leif Rehfeldt joined the parent company Deutsche WindGuard GmbH in Varel in 2013 and entered its management board in 2020.


Deutsche WindGuard – The Wind Professionals

Deutsche WindGuard is one of the leading independent service providers in the wind energy industry. It offers around 60 different services and consultancy solutions across the entire value chain of wind and other renewable energies – combined with valuable synergies across a wide range of disciplines. Thus, the company's own experience from inspections and technical management is directly incorporated into the continuous improvement of its in-house software solutions for the technical and commercial management of wind farms. Developer of the modular wind farm management system WONDER and the mobile inspection app WONDER onSITE is Deutsche WindGuard Systems GmbH, based in Berlin and part of Deutsche WindGuard group. The team also specialises in tailor-made AI solutions. In the complex energy market, Deutsche WindGuard is committed to providing unbiased and manufacturer-independent consulting and comprehensive scientific, technical, and operational services. Deutsche WindGuard was founded in 2000. With the headquarters in Varel, Germany, and subsidiaries in Germany, the United States, China and India, it employs more than 220 experienced experts.

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Caption: Falko Feßer (right), long-standing Managing Director of Deutsche WindGuard Systems GmbH in Berlin, is pleased to welcome Leif Rehfeldt (left) to the management board.

Varel/Berlin, 14 April 2026


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Attention editorial offices: For further questions please contact Deutsche WindGuard Systems GmbH.

Media contact

Irene Burkert
Deutsche WindGuard GmbH
Head of Marketing & Communications
Phone: +49 4451 9515 272
E-Mail: irene.burkert@windguard.de

Falko Feßer
Deutsche WindGuard Systems GmbH
Telephone: +49 (0) 30/22 32 00-27
E-Mail: f.fesser@windguard.de


Deutsche WindGuard Systems GmbH
Bundesallee 67
12161 Berlin

Internet: http://www.windguard.de

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