09 May 2023, Case Studies

Case study: Back-up power supply for telecommunication systems

A hydrogen fuel cell solution for Wolftank-Adisa Holding AG

“Thanks to the modular fuel cell system, the customer is able to secure a wide variety of different systems using the same technology. The use of the Wolftank Smart Cartridge enables an intelligent, flexible and maintenance-free fuel cell hydrogen supply solution. Integrated storage management offers the advantage of automation-protected optimization of the supply chain when using multiple systems in the field and ensures that sufficient hydrogen is available at all sites. Reliability, a fail-safe system and low maintenance costs are crucial to our customers.” – Gernot Mariacher, Wolftank

The Application

Wolftank-Adisa Holding AG is the parent company of an international group of companies with more than 30 years of experience in the turn-key construction of modular hydrogen and LNG refuelling systems, environmental-protection services for contaminated soil, facilities and water, the rehabilitation and monitoring of (large-scale) tank systems and full-range engineering services for fuel supply systems. The company’s technology enables an energy-efficient connection between production systems for green hydrogen and end consumers of small and large networks. A reliable emergency power supply was required for its customer, an Italian telecommunication provider.

The Challenge

If the power grid experiences an outage due to local large-scale damage or for other reasons, the EFOY H₂Cabinet takes over operation for at least 72 hours with its integrated EFOY hydrogen fuel cell modules. This official requirement for runtime must be maintained for critical infrastructure, such as mobile and public service communication. Previously, the sites were only secured with a battery-based UPS solution, which only secured the system for a few hours. Due to their intensive maintenance and emissions, a diesel generator wasn’t considered by the customer. Expanding the battery system also would not have been feasible for structural reasons, as well as due to the space required and acquisition costs involved.

The Solution

SFC Energy and the Wolftank Group developed a hydrogen-based emergency power supply system for an Italian telecommunication provider which guarantees the company a fail-safe system should a power outage occur. The EFOY H₂Cabinet X2.5/5.0 was set up on a foundation and connected to the existing –48 V DC system. The innovative Wolftank Smart Cartridge is used for hydrogen storage and is attached to the EFOY H₂Cabinet with a flexible pipe connection.

The Result

The modular concept and minimal maintenance expenditure of the EFOY H₂Cabinet energy solution were decisive factors for the customer. Thanks to this modular system, the customer is able to secure different systems and power requirements using the same technology, which is advantageous for the connection of their control center technology. Thanks to the flexibility of the hydrogen connection, they can simply connect additional Smart Cartridges in case of higher power demand or longer runtimes. Remote monitoring of the system and Smart Cartridge, automatic self-testing and minimal on-site service also help to save on operating costs. With its EFOY Hydrogen fuel cells, SFC Energy offers a standardized product long established on the market. With more than 20 years of experience and market expertise, SFC provides the customer with the security of availability and service.

Click here to learn more about our EFOY Hydrogen Fuel Cell energy solutions