LIZZEY® combines energy storage and electrolysis. This makes green hydrogen predictable and economically viable.
Our system works: safely.
LIZZEY® stores renewable energy in form of solid zinc. This safe methodology simplifies the permitting process.
Our system produces: cost-effective.
LIZZEY® uses renewable electricity during the most cost-effective power hours. This relieves the strain on the power grids and simultaneously improves cost-efficiency.
Our system delivers: green.
LIZZEY® produces green hydrogen on demand—including in compliance with RED III standards. Instead of curtailing power, renewable energy is put to use.
From pilot projects to industrial-scale capacity—we are bringing ZZE technology into practical application, step by step. Together with our partners, we test, scale, and implement solutions for the demand-oriented production of green hydrogen.
Berlin, Germany
ZZE-Green-H2, Berlin-Tegel
ZZE-GREEN-H2 is a joint research project by STOFF2, Landshut University of Applied Sciences and TU Berlin to advance our Zinc Zwischenschritt Electrolysis (ZZE). Funded by the German Federal Ministry for Economic Affairs and Energy (BMWE), the project is managed by Projektträger Jülich (PTJ). Its aim is to further develop the technology in terms of system design, industrial manufacturing and scalability.
As part of the project, test systems were built and tested with our project partners. A full-scale cell block system was developed and tested as a prototype, while a containerised demonstration system was installed and commissioned at STOFF2’s Berlin TXL site.
The project focused on scaling the technology, developing a cost-optimised cell design and creating an integration concept for flexible deployment in future hydrogen and energy storage applications.
Project profile
Project status:
Research and demonstration project
System scope:
Cell block prototype and containerised demonstration system
Application:
Technology development, scaling and system integration
Technology:
Zinc Zwischenschritt Electrolysis (ZZE)
Key feature:
First implementation and testing of a full-scale cell block
COLLABORATION
Funding Body
Lower Saxony, Germany
Hydrogen Terminal, Braunschweig
At the Braunschweig Hydrogen Terminal, STOFF2’s Zink-intermediate-step electrolysis will be integrated into an existing hydrogen infrastructure for the first time. The green hydrogen produced on site supplies research of fuel cell test stands, the local H₂ network and a hydrogen filling station for trucks. An important step from the technological concept to industrial application.
Research, local H₂ network and truck refueling station
Key feature:
First integration of STOFF2 technology
Collaboration
Funding Body
Lead Partner
ALKMAAR, THE NETHERLANDS
Reformers Renewable, Energy Valley
As part of the award-winning (2025) European REFORMERS project, STOFF2 is integrating a containerized system into a local energy system characterised by renewable generation and grid bottlenecks. Through smart data interfaces, LIZZEY responds flexibly to electricity supply and hydrogen demand. This is a practical demonstration of how flexible electrolysis intelligently combines renewable energy and hydrogen.
Project profile
Project status:
Demonstration and integration project
System scope:
One LIZZEY container system with balance-of-plant
Area of application:
Local renewable energy system
Technology:
Zinc Zwischenschritt Electrolysis (ZZE)
Special feature:
Intelligent matching of electricity supply and hydrogen demand
