Power supply for a business park

Power supply for a
climate-neutral business park

EFOY customer: SAN Group

(c) Visualization SWAP Architektur JANUSCH SAN Biotech Park Herzogenburg 2021 1500x1060 300dpi(c) Visualization SWAP Architektur JANUSCH Wasserstoffanlage SAN Biotech Park Herzogenburg 2021 1500x1060 300dpiIMG 3771IMG 3825

The Application

SAN Group is a global biotechnology company with its headquarters in Austria and employees on four continents. The newly constructed SAN Biotech Park in Herzogenburg, Austria, provides space for 200 employees. Sustainable building technology with a photovoltaic system, geothermal probes, collection of rainwater for the operation of sanitary facilities and a green roof are only parts of the resource-efficient building concept. SAN Group has invested in a hydrogen system that is powered 100% by renewable energy. A photovoltaic system with a capacity of 1.5 MW is being installed on the roofs of the company’s own industrial park to supply the electrolysis system. This is equivalent to the annual energy consumption of around 200 household.


The fully integrated energy concept of the SAN Biotech Park uses surplus solar energy to produce hydrogen and guarantees the supply of parts of the site by reverse-generating hydrogen. The produced hydrogen that is not used directly is kept in separate high-pressure tanks. In order to continue to supply the site with energy in the event of a malfunction in the system or a lack of sunshine hours in winter, a back-up power supply system is required, which runs on the separately saved hydrogen.

“The EFOY H₂Cabinet is the ideal secondary power supply for our fully autonomous energy concept and provides fully automatic access to our saved hydrogen in the event of a power outage.”

Our system focuses on the possibility to save and use solar energy 24 hours a day. The fully integrated energy concept with waste heat utilization and reverse power generation of the excess hydrogen will supply the entire SAN Group site in the future.

Martin Blauensteiner, Managing Director SAN Venture and Project Manager

The solution:
EFOY H₂Cabinet N-Series

The H₂Cabinets of the N-series are designed for indoor applications. The turnkey solution can be equipped with up to four EFOY Hydrogen fuel cells for each cabinet. This corresponds to an output power of 10 kW. For a higher output power, several cabinets can be combined. The N-series is connected to an external hydrogen storage unit, which is placed outside the building.

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Five EFOY H₂Cabinet N10.0 power solutions are used to ensure a continuous power supply. In the event of a power outage, they also serve as an emergency generator. The EFOY H₂Cabinets are connected to the separate high-pressure hydrogen tanks to generate uninterrupted electrical power. The 50 kW fuel cell solution, includes EFOY Hydrogen fuel cell modules, controllers, 450 bar hydrogen pressure reducers, batteries and UPS inverter systems. To be able to monitor and maintain the EFOY fuel cell system remotely, it is integrated into the command center.


The EFOY Hydrogen fuel cell solution is the key element of the SAN Biotech Park facility to enable reliable, self-sufficient and emission-free operation. The given redundancy of the overall solution with minimal downtime is also a key reason for the successful use of the EFOY H₂Cabinets.