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We use deep technology to make green hydrogen cost efficient.


We develop, build, recycle the elementary component of the electrolyzer, the membrane electrode assemblies (MEA), with a reduced use of critical raw materials, best in performance and cost efficiency.

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Green hydrogen production is one key element on the way to a zero emission society.


To mitigate the impacts of climate change, we need to decarbonize industry & transportation immediately.
Therefore our claim is to deliver the most innovative green hydrogen technology leading to a circular & autonomous raw material use and zero emission society.

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We deliver the elementary part to make this happen!

OUR Solutions

We enable scaling of green hydrogen by providing customer centric MEA Solutions to improve PEM Electrolyzer cost efficiency and scalability with strongly reduced critical raw materials, absence of PFAS and best in class performance.

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About us

elementarhy has its roots in basic research in Leibniz Institute of Plasma Science and Technology, the University of Copenhagen, the University of Bern, and validated by the German Aerospace Center which dates back to 2013 when the revolutionary plasma technology was first discovered.

In 2022 when the energy supply almost collapsed in Europe the founders around Arne Birth and Dr. Gustav Sievers wanted to make a change. Specifically, to increase the energy security and sustainability with green hydrogen production.

Built upon revolutionary technologies and energy management elementarhy was created. Today elementarhy is an independent company and funded by the German Ministry of Economics and Climate Protection and set itself the task to supply Stack/ Electrolyzer manufacturer with cost efficient and scalable Membrane Electrode Assemblies.

Gustav Sievers CEO 

Arne Birth CFO/ CMO

Our international team is united by a common desire to have a positive impact on global challenges with technology and an entrepreneurial spirit – more (H2) from less (Ir).


The Leibniz Start-up Prize 2024 goes to the spin-off elementarhy of the Leibniz Institute for Plasma Research and Technology in Greifswald. Elementarhy produces membrane electrode assemblies (MEA) for electrolysis plants for the production of green hydrogen and helps to significantly reduce the use of expensive raw materials. The prize money of 50,000 euros is intended to support the market entry phase.


We strive for long-term Partnerships along the H2 value chain.

elementarhy is in partnership with BMWK, H2UB, EEHH, INP . We work in an industry that is based on trust. elementarhy is a progress driven company with high work ethics and a professional team of experts is supporting us in setting new standards.

Therefore, if you would like to learn more about our technology or discuss a project, please contact us >

Supported by

All our partners are crucial to success and we highlight a few of you to show our gratitude.

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