Five Years of AMBARtec at HYPOS: The East German Hydrogen Congress Shows How Much Has Happened Since

We recently exhibited as AMBARtec at the 1st East German Hydrogen Congress 2026 in Dresden – an event that made clear just how far the hydrogen economy has come in recent years, but also how many hurdles still lie ahead: from financing to scaling up new storage technologies. A good moment to look back on an anniversary that almost slipped past us in the last few weeks: since June, AMBARtec has been a member of HYPOS e. V. for half a decade.
Over the past five years, our HYPOS membership has given us one thing above all: strong networking and professional exchange with the companies, municipalities and research institutions that are actually driving the hydrogen ramp-up in Eastern Germany. One outcome can be named concretely: the event “Decentralised H2 Production from Waste Materials and Its Storage”, held together with HYPOS in Freiberg, where we discussed the practical implementation of such projects with partners from industry and local government.

That was also a topic in Dresden – alongside another focus: heat. At the AMBARtec booth, conversations centred mainly on our solution for climate-neutral peak heat supply for neighbourhoods, based on iron-hydrogen storage technology – and on the question of how a reliable heat supply can be guaranteed even during periods of low wind and solar output (“dark doldrums”). Our answer: surplus renewable electricity is converted into hydrogen via electrolysis and safely stored in iron oxide nuggets. When needed, it is converted back into electricity and heat for the district heating network, for example in combination with heat pumps – a plannable, climate-neutral peak-load solution that complements existing infrastructure rather than replacing it.

The questions we were asked most often in Dresden – about viable commercial use cases, long-term stable regulatory conditions, and a continuous supply of hydrogen for small and medium-sized enterprises – are the same ones currently slowing the hydrogen ramp-up. It is precisely on these questions that the exchange with other companies and decision-makers within HYPOS moves us forward.
Prototyp des Nugget-Behälters der AMBARtec AG zur Installation im 6000-L-Wasserstoffspeicher

Nugget vessel for 6000-liter hydrogen storage system certified


AMBARtec and Purem by Eberspächer prepare for series production.

Dresden, Esslingen, December 15, 2025 – The renowned testing institute LRQA Germany has tested and approved the design of the nugget vessel for AMBARtec's 6,000-litre storage system. AMBARtec and Purem by Eberspächer are intensifying their cooperation in preparation for the series production of the H2compact 6000.

The H2compact 6000 is going into series production.
Following successful testing in accordance with the Pressure Equipment Directive 2014/68/EU, the 6,000-litre Nugget vessel storage system has cleared all hurdles and will receive its CE certificate shortly. ‘This marks a significant milestone for series production,’ reports Matthias Rudloff, CEO of AMBARtec. 'We are delighted to have Purem by Eberspächer as an experienced and committed partner, who are now pressing ahead with preparations for series production at its site in Wilsdruff, Saxony. Next year, our customers will be able to purchase the first containers, after which we plan to ramp up production to several hundred containers," he continues.

Start of industrialisation at the Purem by Eberspächer plant in Wilsdruff
The exhaust and acoustics specialist is preparing for the series production of pressure vessels by developing a modular production concept. Thanks to its existing expertise in industrialisation and many years of experience in steel processing, Purem by Eberspächer is well placed to translate the AMBARtec prototype design into scalable production. To meet the stringent requirements of welding technology, the company is providing its production staff with targeted further training.

A long-term partnership that goes beyond container manufacturing.
Purem by Eberspächer has been involved in designing and developing AMBARtec's containers since the two companies began collaborating in January 2025. For its part, the company, headquartered in Esslingen near Stuttgart, is integrating AMBARtec into its existing business relationships. "By connecting us with strategic partners, including those in the steel industry and other companies in the hydrogen economy, Purem by Eberspächer is opening up new market segments for us," emphasises AMBARtec's Chief Technical Officer, Uwe Pahl. 'This involves both the storage and transport of hydrogen, as well as our offer to supply companies with silver hydrogen.' This is recycled hydrogen, produced as waste gas in various sectors of the economy, which can be captured and reused with AMBARtec storage technology.

800 kg of hydrogen per container.
The H2compact 6000 Plus has a storage capacity of 800 kg of hydrogen or 26 MWh. Installed in conventional 20-foot containers, it can be transported using standard logistics methods, such as lorries, ships, rail and cranes. No adjustments to the infrastructure are necessary, nor are there any lengthy approval procedures under the Federal Immission Control Act (BImSchG) or the Hazardous Incident Ordinance. Extensive operational testing has confirmed the cycle stability of the storage material, making the containers suitable for continuous use.

Pressekontakt:  

Dr. Ines Bilas

AMBARtec AG

Head of Marketing and Communication

Phone:  +49 172 234 11 00

E-Mail: ines.bilas@ambartec.de

Website: www.ambartec.de 

AMBARtec and Envenion cooperate on hydrogen projects in Switzerland

AMBARtec AG and Envenion GmbH, the Swiss consulting company for innovative energy supplies, reaffirm their commitment to the Swiss energy market. The two companies plan to work together to bring AMBARtec's uniquely innovative HyCS technology for large-scale hydrogen storage and transport to Switzerland and neighbouring regions.
AMBARtec and Envenion are looking forward to deploying the innovative HyCS® storage technology in Switzerland and adjacent regions.

Envenion GmbH specializes in climate-friendly, low-emission energy supply solutions for residential, commercial and industrial buildings. The company, based in the greater Zurich area, accompanies its customers on the path to energy self-sufficiency with planning, project management and long-term support for the systems. 

Liberty Pier and AMBARtec cooperate on hydrogen storages for ships

Green hydrogen is increasingly discussed for ship propulsion. A special challenge is the storage of sufficient fuel capacities on board. Our HyCS-technology opens up entirely new prospects. The storage is compact and requires little installation space compared with other systems. It is pressureless and can be easily arranged below deck. Compared with approaches to integrate H2 in liquids such as ammonia, a significantly higher overall efficiency is achieved at rather moderate costs. Find press release here.
In order to provide this technology to ocean going vessels and inland waterway trades, AMBARtec and its consultant and maritime project developer Liberty Pier, Bremen signed a protocol of cooperation. The cooperation plans, among others, projects in the field of Blue Economy, particularly with a view to port management and logistics and for ocean going vessels and inland waterway trades. Both companies became involved in sustainable fuel solutions and are committed to the rapid change from conventional industrial standards to green alternatives.