Bremerhaven starts test for revolutionary green hydrogen at sea!
Scientists are testing the production of green hydrogen from offshore wind in Bremerhaven, part of the H2Mare project.

Bremerhaven starts test for revolutionary green hydrogen at sea!
An exciting test process for the production of green hydrogen took its first steps in Bremerhaven yesterday. Scientists are examining how environmentally friendly hydrogen can be produced from offshore wind power in rough seas. The innovative platform at the heart of this project is 60 meters long and 15 meters wide and will initially be tested in the port of Bremerhaven before being relocated to the high seas at the end of August. The location will be near the North Sea island of Heligoland, where the everyday viability of the platform under wind and waves will be demonstrated. This reports buten and within.
Behind this ambitious project is the “H2 Mare” project, which is funded by the Federal Ministry of Education and Research (BMBF) with an impressive 740 million euros. Around 32 partners from science and industry are involved in H2 Mare, including the Helmholtz Center Hereon, which supports technology development with several institutes. This cooperative community aims to produce green hydrogen and derivative products from offshore wind power within four years. Fair Economics highlights that the production of green hydrogen from renewable energies should make a decisive contribution to reducing the CO2 footprint.
The platform and its functions
The new floating platform, part of the H2 Mare project, is planned to produce one barrel (129 liters) per day, with the aim of scaling the future fully operational facility to a hundred times that amount. A key advantage of this offshore platform is that it does not require expensive power cables to land. The necessary energy is generated directly on site from wind turbines. This self-sufficiency increases efficiency and reduces the production costs for green hydrogen. This underlines Hereon with reference to the increasing need for climate-neutral energy sources.
What is particularly notable is that the H2 Mare platform is becoming increasingly important as Germany aims to achieve greenhouse gas neutrality by 2045. In order to achieve this goal, the development of efficient technologies in the field of renewable energies is essential. Offshore wind farms offer ideal conditions thanks to stable wind conditions and low usage conflicts.
Research and Development
The research focuses not only on the production of hydrogen, but also on the development of PtX (Power-to-X) products that can be generated from excess renewable energy. H2 Mare aims to bypass grid connection, enabling sustainable storage and transport of such energy sources. However, there are challenges that need to be overcome, including environmental impact, operating costs and social acceptance. The associated institutes play a central role here by examining various aspects of technology and its influence on the region.
Overall, the H2 Mare project brings a breath of fresh air to the discussion about the energy transition and offers promising perspectives for the future. If the tests in Bremerhaven are successful, the technology could contribute to reducing the CO2 footprint not only locally but also internationally and set new standards for maritime energy production.