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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.

1988
JSB is founded by Jens Sivert Bak
1988
Vestas is the first customer
1998-99
Development of endless sheet technology and patent
2005
LM Wind Power decides to outsource their kitting and JSB becomes the primary supplier
2008
Windkits in the US is established as JV
2008
Siemens close down all in-house kitting and JSB is appointed as the primary supplier
2010
Production site in Zhuozhou (CN) established. Site primarily serves Vestas and Siemens
2012
Wind Group, comprising Jupiter Group, JSB Group and Polytech is acquired by Pentaco Partners
2013
Acquisition of Windkits (former JV)
2014
Jens Sivert Bak steps down and new CEO, Frank V. Nielsen is appointed
2015
Expansion of customer base to include Nordex and TPI
2017
Opening of second Chinese production site, Dafeng (CN)
2017
Acquisition of MEP, a Spain-based competitor to JSB
2018
Opening of Turkey production site, Izmir (TR)
2019
Opening of Mexican production site, Matamoros (MX)
2020
Frank V. Nielsen steps down and new CEO, Andreas Kipker is appointed
2021
Opening third Chinese production site in Wenan, Langfang (CN)
2021
Construction started for two new Indian production sites in Ahmedabad and Chennai (IN)
Management
- 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.