What drives us

We deliver customized, efficient, and affordable core kits to the global wind power industry, but that is not all: Through independent and flexible collaboration, we help our clients look beyond the apparent opportunities of today and towards a simple global supply chain.

Our business model is agile, independent, and fully transparent in terms of material and kitting costs, which allow our clients to make the right decisions regarding sub-suppliers, core materials, specifications, and requirements. No matter the specific need, our engineers are ready to go through the iterations of prototyping and testing necessary to deliver a quality kit.

For us, a core kit is not just yet another component - it is what we do and what we know. For more than 30 years, we have been supplying core kits to the industry, which has allowed us to effectively adapt every single part of the involved processes to maximise the output.

From our custom-machinery to the location of our production and storage facilities, we empower performance – of material, of kits, of turbines, and of the industry. By choosing JSB as your kitting partner, you get a global ally driven by continuous improvement, flexibility, and transparency.


Your global core kit partner

Our production sites are placed strategically at the centre of several wind blade production clusters. Our global sites are in constant dialogue with each other through weekly meetings and a constant eye on performance indicators and best practices. We do this to ensure that all of our products adhere to our own high standards.

Allentown, USA
Falces, Spain
Ringkøbing, Denmark
Izmir, Turkey
Zhuozhou, China
Dafeng, China
Matamoros, Mexico
Wenan, China
Ahmedabad, India
Chennai, India



JSB is founded by Jens Sivert Bak


Vestas is the first customer

Growth with Vestas


Development of endless sheet technology and patent

Customer diversification and internationalization


LM Wind Power decides to outsource their kitting and JSB becomes the primary supplier


Windkits in the US is established as JV


Siemens close down all in-house kitting and JSB is appointed as the primary supplier


Production site in Zhuozhou (CN) established. Site primarily serves Vestas and Siemens


Wind Group, comprising Jupiter Group, JSB Group and Polytech is acquired by Pentaco Partners


Global consolidation


Acquisition of Windkits (former JV)


Jens Sivert Bak steps down and new CEO, Frank V. Nielsen is appointed


Expansion of customer base to include Nordex and TPI


Opening of second Chinese production site, Dafeng (CN)


Acquisition of MEP, a Spain-based competitor to JSB


Global footprint


Opening of Turkey production site, Izmir (TR)


Opening of Mexican production site, Matamoros (MX)


JSB Laboratory is accredited (Q1) by DANAK




Frank V. Nielsen steps down and new CEO, Andreas Kipker is appointed


 Opening third Chinese production site in Wenan, Langfang (CN)


Construction started for two new Indian production sites in Ahmedabad and Chennai (IN)



  • Behind every success lies a good decision, and behind every good decision lies the ability to make the right one. That is why we will do everything in our power to create an environment for our colleagues and business partners in which making the right decisions are effortless.
  • At JSB, safety comes first. We speak up and stop if safety in any way is compromised. We prioritize health and safety of our employees and lead our organization by walking the talk. Stepping up, taking responsibility and setting direction always comes natural to us. We strive to be successful together.
  • We continuously meet new ideas with an open mind to create an environment where innovation is welcomed. We collaborate with suppliers and customers to create the best solution for the supply chain and to foster sustainable solutions to reduce carbon footprint.
  • All we do is with passion for a sustainable future. Our decisions reflect that we are aware of the limited resources we have available. Being economically responsible with our time and investments is underlined with how we keep focus on where we make the biggest difference for our customers.
Andreas Kipker
Brian Dysted
Morten Nielsen
Marianne Holst Larsen
Human Resources
Per Olesen
Morten Jacobsen
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