Customer application

Cornerstone of the Energy Transition

Automation for Modular Hydrogen Generation

Hydrogen will play an important role as an energy storage system in the sustainable energy landscape of the future. The collaboration between WAGO and FEST demonstrates how this production can be carried out in the present using modular concepts and the interplay of sophisticated automation technology.

In this article, you will learn:

  • The role hydrogen will play as an energy storage system in the future

  • How modular concepts enhance the efficiency of hydrogen electrolysis systems

  • Why it is crucial for these systems to operate autonomously

  • The application of the WAGO Remote I/O Module as an automation component



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The potential for green hydrogen is enormous – both today and in the future as it continues to grow.

A Collaboration between FEST and WAGO

Innovation through Cooperation

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The containerized electrolysis system enables a standardized and modular design for system sizes with nominal loads up to 30 MW.

Hydrogen: A Key Element in the Future Energy Mix

Electric vehicles, heat or hot water generation: wind and sun now drive more electrons through electrical conductors – without detours, directly from the generator to the consumer. Indeed, it seems that the future of energy supply can’t manage without molecules. Energy must be stored. Some consumers also have an unquenchable desire for more energy in the tank than, for example, their batteries currently offer.

Thus, the energy cocktail of the future requires a little addition for its success, that is, hydrogen, the smallest molecule. When produced with excess electricity generated from renewable sources, it forms both a potent energy storage system, and also an alternative energy supply for aviation, long-distance, heavy-duty and marine traffic.

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Christian Perplies (Senior Sales and Business Development Manager for Hydrogen Technology, FEST GmbH) shows Nils Roth (Senior Area Sales Manager for Industry, WAGO) the containerized electrolysis system.

FEST Converts Excess Energy into Green Hydrogen

However, as convincing as the concepts appear on paper, there are still questions regarding the source of green hydrogen.

One solution may already be close to home: electrolyzers can exploit their full potential when located near wind farms or solar parks. Instead of throttling wind turbines or decoupling solar cells from the grid in the event of an oversupply of energy, the green current that is not being consumed can instead be used to split water into oxygen and hydrogen.

FEST, headquartered in Goslar, provides these types of systems. The company, part of the Schmidt Kranz Group, plans, develops, builds, and installs custom hydrogen electrolysis systems and supply systems for Power-to-X applications.

Due to their size, these systems are not continuously monitored on-site – a concept that only succeeds when engineering, system technology, and automation work seamlessly together.



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Components from WAGO

Details of the WAGO Products Installed in the Project

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WAGO I/O System Field

Decentralization with extended connectivity – the WAGO I/O System Field for IP67-rated cabinet-free automation features an impressive range of functions.

Your Benefits:

  • Integrated load management

  • Extended network connectivity

  • Functionality and aesthetics in one system

  • All-in-one solution thanks to IO-Link

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Power Supplies

Power supplies are the core of any automation solution. WAGO offers a broad portfolio of different series and performance classes for virtually any application.

Your Benefits:

  • Highly efficient devices with up to 96.3% efficiency

  • Numerous approvals for a wide range of applications

  • CAGE CLAMP® connection technology for nearly all devices

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