H2SEA lectures at H2Makers event at TU Delft

Tom Evertse, Technical Consultant Offshore Hydrogen at H2SEA, presented on the H2Makers Meet-up at TU Delft themed Offshore Hydrogen Production on June 27.

The event focused on technologies and requirements for offshore hydrogen production, drawing significant interest from Energy companies, Regulatory bodies, Hydrogen start-ups and South Holland’s manufacturing industry.

Evertse outlined the technical challenges associated with four main hydrogen production subsystems, namely electrical systems, water treatment, cooling systems and hydrogen treatment. Attendees posed numerous technical and regulatory questions, fostering a productive dialogue about the future of hydrogen energy.

“I’m thrilled to present to such a proactive audience said Evertse. It’s only through industry-wide collaboration that we can solve these challenges”.

The event featured contributions from TU Delft, SwitcH2, and PosHYdon, each detailing their progress and challenges in offshore hydrogen.

The H2Makers Meet-Up underscored the importance of cross-sector collaboration and continuous learning in advancing offshore hydrogen production.

H2SEA speaker at Wind Energy Technology Summit Gent

Tom Evertse, Technical Consultant Offshore Hydrogen at H2SEA, will be presenting at the Wind Energy Technology Summit in Gent, Belgium on June 4th. His lecture will cover different concepts and philosophies for hydrogen production at sea.

The Wind Energy Technology Summit is dedicated to the production of green electrons and molecules at sea and organised by Sirris, OWI-Lab, Agoria Energy Technology Club and WaterstofNet.

The first day of the conference, June 4th, will focus on offshore hydrogen, while the second day, June 5th, will address structural integrity issues related to offshore foundations and constructions. This marks the 4th edition of the Wind Energy Technology Summit.

H2SEA shares expertise in panel during World Hydrogen Summit

At a panel session during the World Hydrogen Summit, Edwin van Drunen, Managing Director of H2SEA, offered insights on the economic viability of offshore hydrogen initiatives. 

As a distinguished panelist at the HEROW side event, Edwin shared H2SEA’s research insights on the scalability of offshore hydrogen projects.

Joining H2SEA on the panel were representatives from prominent organizations such as Shell, RWE, Eneco, and TNO, the latter also serving as the co-organizer of the HEROW event. HEROW, an acronym for Hydrogen Empowering Revolutionary Offshore Wind, convened industry leaders to explore advancements in offshore hydrogen technologies.

H2SEA study reveals costs of Energy Storage Systems can be reduced by 75%

Green hydrogen company H2SEA has completed a study showing that the costs for ESS (Energy Storage Systems) on offshore hydrogen platforms can be reduced by 75%.

H2SEA investigated different cost reduction scenarios for offshore green hydrogen production with a connection to an off-grid windfarm for the power supply. 

Due to an extensive network of technology partners, H2SEA has access to accurate data of hydrogen building blocks. Different configurations have been evaluated, taking both grid stability and cost implications in mind. 

One of the cost reduction strategies involves the integration of different transformers optimising space and cost per megavolt-amperes/m2, and the use of a smart ESS. 

Further, a different configuration of the energy storage and electrolyser system can reduce infrastructure requirements.

One of the configurations that H2SEA has modelled, leads to a 75% decrease in costs of the ESS, which is quite a significant part of CAPEX investment, making green offshore hydrogen production a feasible economic option as renewable fuel in the future.

Visit us @ World Hydrogen Summit in Rotterdam

On 13 & 14 May, H2SEA will be exhibiting on the World Hydrogen 2024 Summit & Exhibition in Ahoy, Rotterdam.

H2SEA will be showcasing at stand E40 in hall 2. Explore our latest advancements in off-grid offshore hydrogen production, cost-effective energy storage solutions, innovative hydrogen pipeline strategies, and groundbreaking concepts for expansive offshore hydrogen platforms.

Stop by our booth for engaging conversations, refreshments, and insights into how H2SEA can empower your ambitious projects. Let’s collaborate towards a sustainable hydrogen future. We look forward to meeting you there!

H2SEA exhibitor on Tech Fair ZIE 2024

H2SEA is exhibiting on technology trade fair & conference ZIE 2024 in Rotterdam on 4 April. 

The event is set up to connect high tech companies with fabrication industry, knowledge institutes and government in the province of South Holland, the Netherlands. 

Together the different organisations can play a key role in the field of digitalization, the energy transition and the circular economy. One of the focal point of the ZIE 2024 summit is hydrogen.

Please feel welcome to visit our stand no. 126. We would love to get in touch and see how we can help you with your hydrogen challenges.

H2SEA carries out assessment on monopile based structures for hydrogen WTG

In co-operation with Delft University of Technology, H2SEA has carried out a structural assessment of monopile-based support structures for offshore hydrogen WTG’s (Wind Turbine Generators).

One of the main questions during the assessment was if decentral hydrogen production on a monopile-based support structure of an offshore wind turbine would be structurally feasible.

The goal of the research was to define the differences in support structure geometry and assess the changes in the design methodology of an offshore wind turbine support structure, including a decentralized hydrogen production platform. Looking into future developments, a 15 MW reference turbine was selected for a water depth of 45 m in the F3 sector of the North Sea.

H2SEA carries out assessment on monopiles for H2 WTG

To obtain platform mass, dimensions, and rotational inertia, all required systems were selected, listed and an optimised platform layout and mass estimation were made. For the design of the platform support beams, gravitational loads and extreme wind gust loads were taken into account. The selection of the support structure concept was performed using a multi-criteria analysis.

For fatigue assessment, an analytical fully dynamical model was constructed in Maple. The structure was simulated by the equations of motions, including airy wave force, rotor damping, topside and platform mass and rotational inertia, embedded length, and homogeneous soil stiffness. The Maple model was used to simulate dynamic behavior of both structures, determine first and second natural frequency, and present displacements and overturning moments in these two mode shapes. 

Finally, a fatigue damage calculation including 500 combinations of wave height and period is performed, for a 25-year lifetime.

If you are considering decentral hydrogen production at sea, please contact us and we will be glad to help you with smart and well thought-out designs.

H2SEA develops hydrogen pipeline strategy for NGT & NOGAT

For pipeline system operators NGT (NoordGasTransport) and NOGAT (Northern Offshore Gas Transport), H2SEA has developed a strategy to repurpose existing offshore pipeline infrastructure for hydrogen transport to shore. 

 H2SEA carried out the strategy study together with the consulting firm Guidehouse. specialized a.o. in energy transition and Enersea, experts in offshore engineering. 

The NGT infrastructure consists of almost 500 km of pipeline from the UK North Sea border to the Dutch reception facilities in Uithuizen, greater Eemshaven area. NOGAT owns and operates 250 km of pipeline running North to South on the North Sea, landing in Den Helder. The NOGAT infrastructure has a connection with Denmark and Germany. By joining forces, NGT and NOGAT aim to facilitate offshore hydrogen production and can achieve this by making (parts) of their own gas pipeline infrastructure ready for hydrogen transport. This while still serving existing and future gas producers.  


H2SEA and Enersea investigated the phasing out of natural gas production over time and a phased reservation of pipeline sections for hydrogen transport to shore. 

H2SEA’s scope was the assessment of the production phasing whereas Enersea’s specifically focused on the flow assurance and potential fatigue loading of the system which were assessed and found suitable for long-life application. 

The offshore hydrogen backbone NGT and NOGAT are planning to create, can be connected to the already envisaged onshore hydrogen backbone in Eemshaven and Den Helder areas.  

 “Repurposing (of parts) of our combined assets has enormous environmental benefits,” says Mr Ron Hagen, Managing Director at NGT. “There is no impact on the vulnerable ecosystems of the North Sea and the Wadden Sea. The infrastructure is already positioned right in the middle of future offshore wind park areas for hydrogen.”   

 Mr Hans Janssen, Managing director of NOGAT continues: “Our combined infrastructure can be hydrogen-ready and operational before 2030. It can facilitate bringing hydrogen production from the already planned pilot plants of 100 MW and 500 MW by Dutch Authorities to shore. In total, both pipelines can accommodate about 10-14 GW of offshore wind and will accelerate the energy transition and contribute to achieving the climate goals.”  

Visit our stand at World Hydrogen Summit Rotterdam

H2SEA will be exhibiting at the World Hydrogen Summit in Rotterdam on 10 and 11 May. Visit our stand D05 in hall 6 and learn all about the breakthroughs we have achieved in the field of offshore hydrogen production and the demonstration projects in which we are participating.

Let’s catch up and see how we can help you with your hydrogen challenges. We serve great coffee, refreshments and tasty bites on our stand!