Ohmium Develops PEM Electrolyzers for Offshore Floating Ammonia Project

Ohmium International signed a term sheet with SwitchH2 BV—a renewable energy joint venture partnered with BW Offshore. Under the agreement, Ohmium will develop proton exchange membrane (PEM) electrolyzer solutions for a 300-MW offshore floating green hydrogen and ammonia synthesis project led by SwitchH2.

“Ohmium is thrilled to be part of this project,” said Arne Ballantine, Ohmium CEO. “We appreciate the expertise that SwitcH2 Joint Venture brings to offshore floating production, and their vision in leveraging renewables and green hydrogen for the creation of green ammonia. The market for green ammonia is poised to grow exponentially in the coming decades, especially as a source of clean fuel for the global shipping industry, and Ohmium is looking forward to collaborating with SwitcH2 in helping address that need.”

Sited off the coast of southern Europe, the project will create an industrial-scale floating green hydrogen and ammonia production facility based on floating production, storage, and offloading (FPSO) technologies. Ohmium will install 300 MW of PEM electrolyzer solutions on SwitchH2’s 268-meter FPSO vessel and, upon completion, the facility will have an annual production capacity of up to 55,000 tons of green hydrogen and nearly 300,000 tons of green ammonia. This capacity is sufficient to fuel multiple oceangoing vessels for one year.

“We are pleased to have Ohmium join us in making this project possible,” said SwitcH2’s Director and Co-Founder Bob Rietveldt. “Ohmium’s compact, hyper modular PEM electrolyzers are ideally suited for the space-constrained FPSO setting. Their product delivers high efficiency, and the comprehensive, standardized design enables flexible and rapid installation, at scale.”

Ohmium’s PEM electrolyzers will leverage nearshore solar and wind power, along with treated seawater, to generate green hydrogen. Hydrogen will be fed into an on-deck ammonia synthesis unit, and the finished product will be offloaded to an ammonia carrier for transport to offtakers. With support from the Dutch government and DNV’s approval of its design principle, green ammonia production is anticipated by 2029.

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In May 2024, Ohmium International agreed to equip IVICOM’s upcoming 10 MW green hydrogen plant in Croatia at INA Rijeka Refinery with its PEM electrolyzer technology. This collaboration will create sustainable fuel for the country’s expanding transportation market. The plan is to couple Ohmium’s PEM technology with a new solar power plant to produce green hydrogen and help decarbonize the refinery’s operations.

IVICOM’s green hydrogen and solar power plants are supported by Croatia’s Recovery and Resiliency Facility, which deploys measures to the improve the diversity of energy supplies and sustainability for members of the European Union. This project also accelerates the country’s National Hydrogen strategy to install 70 MW of hydrogen production facilities by 2030 and ramp up to 2,750 MW by 2050—also achieving climate neutrality by 2050.