Hydrogen
We deliver world-class power conversion and cooling solutions for hydrogen plants, enabling efficient and reliable operations.
Years of power conversion experience
Annual manufacturing converter capacity
Converters and rectifiers produced annually
Powering the future of hydrogen
Hydrogen is reshaping the global energy landscape and is central to achieving a net-zero future. Hydrogen operations place exceptional demands on power conversion, controls, and cooling, where stability and material integrity are critical to performance.
With over 40 years of experience in wind energy, KK Group brings proven electromechanical and thermal management expertise to the hydrogen sector. Both industries require high-power handling, advanced energy conversion technologies, efficient cooling to ensure stable operation under all conditions.
By adapting proven products and know-how from wind, we help electrolyser OEMs and project developers reduce time-to-market and lower development costs typically associated with new technologies.
Power solutions for the hydrogen industry
Leveraging decades of power conversion expertise, our end-to-end Power Supply Units and rectifiers deliver reliable power to efficiently drive the electrolysis process.
Cooling solutions for the hydrogen industry
Designed for durability and high performance, our cooling solutions handle thermal loads with higher reliability, ensuring maximum uptime for hydrogen production.
Proven expertise in grid compliance
Grid compliance remains a critical success factor for hydrogen plants.
Leveraging decades of experience from the wind sector, KK Group plays a key role in ensuring plants meet stringent grid requirements.
Our PSUs build on technologies such as smart inverters and advanced control systems - adapted from wind turbines to hydrogen applications - while our integrated cooling systems maintain optimal performance under varying grid and operational conditions.
By embedding grid compliance and thermal stability early in the project lifecycle, we help developers reduce risk, avoid costly redesigns, and accelerate deployment.
A global supply chain you can rely on
The competitiveness of green hydrogen depends on efficient, large-scale manufacturing and secure component supply.
As the largest converter manufacturer in the wind industry — and now a full-line supplier of both power and cooling solutions — KK Group leverages its global footprint, scale and technology to drive down cost and complexity.
Our resilient global supply chain combines advanced power and cooling technologies with worldwide reach, enabling us to deliver reliable, end-to-end solutions for electrolysers that meet the dynamic demands of the green hydrogen market.
Case story:
Powering Sunfire's 100 MW electrolyzer system
KK Group will supply customised Power Supply Units for Sunfire’s 100 MW electrolysis plant, part of one of Europe’s largest green hydrogen projects in Germany.
Sunfire selected KK Group for their ability to deliver tailored PSUs that convert electricity from the grid into stable, efficient power for the electrolyzers, meeting specific grid and plant requirements.
With production already underway, including testing and quality verification, this partnership sets the stage for future large-scale green hydrogen projects.
Services for the hydrogen industry
We provide complete lifecycle services for hydrogen power supply units, from feasibility and grid integration to commissioning and long-term operation.
Our expertise helps optimise performance, reduce the Levelised Cost of Hydrogen (LCOH), and ensure reliable plant availability.
With comprehensive documentation, expert supervision, spare parts, and responsive maintenance support, we minimise downtime and keep hydrogen operations running efficiently.
