The next challenge for offshore hydrogen production

The conversation around offshore hydrogen has evolved rapidly.

Across Europe, pioneering projects are demonstrating different approaches to producing green hydrogen directly at sea. The question is no longer simply whether offshore hydrogen is technically possible.

The next challenge is making it work as dependable industrial infrastructure.

How do you minimise maintenance where every intervention requires specialised resources and careful planning? How do you monitor system health remotely? Detecting degradation before it becomes failure adds another challenge. So does building confidence in offshore electrolysis technologies before they are deployed at commercial scale.

These may sound like engineering questions.

In reality, they are also business questions. Reliability, availability and maintenance requirements will directly influence whether offshore hydrogen production can become a scalable and economically viable part of the energy system.

Why BUBBLES matters

With several offshore hydrogen initiatives already underway across Europe, some may wonder why another project is needed.

BUBBLES takes a complementary approach.

Rather than demonstrating another offshore production concept, the project concentrates on strengthening the engineering foundations that future offshore hydrogen systems will rely on.

Its focus includes reliability, maintenance strategies, remote operation, condition monitoring and technology qualification. Together, these help address a fundamental challenge: how to reduce technical and operational uncertainty before offshore electrolysis moves towards larger-scale deployment.

Every successful demonstration increases confidence that hydrogen can be produced offshore.

BUBBLES addresses the next question: how do we make sure it continues to work reliably?

Why reliability matters offshore

Operating industrial equipment offshore is fundamentally different from operating it on land.

Salt accelerates corrosion. Wind, waves and vibration create continuous mechanical stress. Weather limits maintenance windows. And every unplanned intervention can quickly become a complex and costly logistical exercise.

That changes the role of reliability.

Offshore, reliability is not simply another performance metric. It becomes a design philosophy.

The technologies that ultimately succeed will not necessarily be those that deliver the highest efficiency under ideal conditions. They will also need to perform predictably after years of exposure to demanding operating environments, while minimising maintenance and unplanned downtime.

For Exion Hydrogen, innovation is not measured by what performs best on the first day, but by what continues to perform after years of demanding industrial operation.

That philosophy naturally extends to offshore hydrogen, where long-term performance can matter as much as initial performance.

From monitoring to remote operation

Limited physical access also changes how an offshore electrolyser needs to be operated.

If operators cannot simply send a technician whenever something requires attention, systems need to provide better insight into their own condition. Monitoring, data management and remote operation therefore become integral parts of the engineering challenge.

The objective is not simply to collect more data.

It is to generate the right information to understand system health, identify developing problems and support better operational and maintenance decisions.

This is another area where offshore hydrogen can build on experience from established offshore industries while adapting those lessons to the specific requirements of electrolysis.