This image shows the containerized rectifier and electrolyzer infrastructure installed at the Jeju hydrogen production site in South Korea. The 5 MW-class power conversion system, based on KraftPowercon’s H2Kraft concept, delivers controlled DC power from the medium-voltage grid to the electrolysis process. Designed with active front end architecture, the solution supports low harmonic distortion and grid-friendly performance. The project demonstrates how standardized, plug-and-play rectifier systems enable reliable and scalable industrial hydrogen production.

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5 MW H2Kraft Rectifier for Jeju Hydrogen Plant

More outcome‑focused
Stable, grid‑compliant power for large‑scale hydrogen production
The solution has met both technical and execution requirements, enabling consistent 

This aerial image shows the coastline of Jeju Island, South Korea, where a 5 MW hydrogen production project is being developed. With high renewable energy penetration, Jeju presents unique grid challenges that require stable and grid-friendly power conversion for electrolysis. KraftPowercon’s H2Kraft rectifier solution supports the electrolyzer system by delivering controlled DC power from the medium-voltage grid. The project demonstrates how advanced rectifier technology enables reliable, industrial-scale hydrogen production in renewable-heavy environments.

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Jeju Island Hydrogen Project Location in Korea

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<h4>Discover our new digital tool for support!</h4>
Are you tired of looking for documents and papers? Do you want a smooth and available solution to the problem?
With our customer portal you get access to the following functions:
<ul>
<li>Information of your system</li>
<li>Tools for annual testing</li>
<li>Documentation</li>
<li>FAQ</li>
<li>Contact form to our support</li>
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The most common documents you will find in the customer portal are manuals, layouts, circuit diagrams, device lists, single line diagrams, and setting lists.
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To get access to our customer portal with information about your system we have chosen to use QR codes that are placed on your system, and you can easily get access to relevant information.
Scan the QR code, create an account and confirm via e-mail and you will be up and running.
There are two levels for your account, basic and extended. If you chose basic, you will access every information besides documentation. This type of account you only confirm by yourself with your specified e-mail. If you choose an extended account, you will access everything that a basic account provides you with and documentation as well.  This type of account needs to be confirmed with your specified e-mail and from us at KraftPowercon. This is for your own safety.
Do you have existing equipment from us but missing a QR code? Contact us via e-mail which you will find below, and we will help you get connected!
If you already are connected to our customer portal you can log in through: <a href="https://kp-care.com/find/">https://kp-care.com/find/</a>

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KraftPowercon offers solutions, products, services—and drives innovation—within industrial power conversion.

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KraftPowercon delivers power conversion systems for hydrogen production where efficiency, power quality, and reliability are critical. Below we have collected selected projects and references from hydrogen applications worldwide.

Hydrogen case studies