With more than 50% of its energy needs supplied by renewable wind and solar power, Denmark is considered a frontrunner in the global race to decarbonize. Everfuel, a leading Danish green hydrogen provider, believes green hydrogen will play a strong role in more resilient energy systems for the clean energy transition. However, due to the large amount of energy needed for green hydrogen, it is challenging to provide adequate storage capacity in an efficient way. To establish proof of concept, Everfuel set ambitions to help Crossbridge Energy Fredericia reduce its carbon footprint within existing refinery processes and make a competitive supply of green hydrogen available for Denmark’s transportation sector.

As part of phase I of the three-phase HySynergy project, Everfuel faced the challenge of constructing the 20 MW PtX facility – the first large-scale electrolyser in Denmark as well as being among Europe’s largest electrolysers – and to initiate the delivery of green hydrogen production on a commercial scale. To lay the foundation for their vision, Everfuel required a high-quality and scalable power conversion solution they could rely on for the long term.

Everfuel selected Danfoss for its renowned expertise in energy efficiency and innovative solutions. Danfoss iC7-Hybrid power converters play a pivotal role in the HySynergy project.  To meet Everfuel’s needs, Danfoss delivered two liquid-cooled AC-to-DC grid converter systems in outdoor duty enclosures. Each grid-compliant system can deliver two 5 MW outputs for the HySynergy project’s Phase I goals. The systems combine the highest power density modules available on the market with thermal management features that cut infrastructure needs and costs significantly.

The power converters deliver key technology that enabled Everfuel’s facility to meet its target of test production of the first hydrogen in December 2022. Equipped with high conversion efficiency of 98%, iC7-Hybrid reduces both energy consumption and costs during the conversion of renewable energy sources into hydrogen. Its simplified grid connection also enables heat recovery during hydrogen production, which can be fed back into the grid for district heating in Fredericia. This early result demonstrates the project’s capacity for sector integration. Everfuel is now on track to help decarbonize some of the commercial sector’s most hard-to-abate sectors, including transport and heavy industry, in alignment with Denmark’s climate target of 70% CO2 reduction by 2030.