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Green Hydrogen With Innovative Automation Technology to Intelligent Sector Coupling

From Thorsten Sienk, Specialist Editor for Sustainability and Technology in Corporate Communications, Phoenix Contact, Blomberg, Germany 6 min Reading Time

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Hydrogen is currently being discussed a lot in many places – on TV and radio, in newspapers, on the Internet, on social media, and at events. It is also a hot topic in Bremerhaven, Germany, where this energy carrier is literally providing a tailwind on the path to climate-neutral mobility. At the Grauwallring industrial estate, Hy.City.Bremerhaven uses a wind turbine generator for the electrolysis of hydrogen directly on site.

With hydrogen, the buses in Bremerhaven achieve a longer range compared to batteries.(Source: Phoenix Contact)
With hydrogen, the buses in Bremerhaven achieve a longer range compared to batteries.
(Source: Phoenix Contact)

The green hydrogen project was realized by GP Joule, the system provider for integrated energy solutions which acts as the general contractor. The production of green hydrogen is part of a regional hydrogen ecosystem and is considered a lighthouse when switching from fossil fuels to renewable fuels. Automation technology from Phoenix Contact is used to ensure sector coupling with high availability and a secure remote connection. It makes economic sense for Germany to continue pursuing hydrogen technology, so that it can maintain its standing as a global center of business. So far – at least according to the opinions expressed by industry experts in the ZDF business news program Wiso, which was broadcast in the summer of 2024 – the chances are good that the German SME sector will be able to play to its strengths and become a global driver of the energy transition with hydrogen.

But how is this possible? By industry and investors showing that it works – as it does in Bremerhaven, for example. Here, GP Joule has implemented a complete value chain for green hydrogen for Hy.City.Bremerhaven – from electrolysis as a key technology, through compression and storage in mobile tankers, right through to delivery to the service station and the right fuel cell buses for public transport. Only the wind turbine generator, which supplies energy to the electrolyzer, was already in place at the Grauwallring industrial estate, having been installed several years ago (Figure 2).

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