Wind Turbine Powers Electrolyser to Boost Off-Grid Green Hydrogen Production
A European hydrogen test initiative has successfully connected a wind turbine to two electrolysers, potentially paving the way for off-grid green hydrogen production at sea and reducing costs, according to Germany’s Ministry of Education and Research.
In a significant development, the “H2Mare” project partners, Germany’s Fraunhofer Institute for Wind Energy Systems (IWES) and Siemens Gamesa, announced that it is the first instance of linking two electrolysers directly to a wind turbine at a megawatt scale.
The concept of integrating a wind turbine directly with an electrolyser to produce hydrogen presents substantial technical challenges. The researchers highlighted the complexities due to the variable nature of wind energy and the need for specialised water treatment processes for electrolysis. The newly constructed facility, situated on land in Denmark, will serve as a test site to evaluate the system’s viability, with ambitions to replicate it offshore.
The H2Mare project aims to harness optimal conditions for wind energy generation at sea to directly produce green hydrogen. Offshore wind turbines are typically larger and more powerful than their onshore counterparts, and benefit from stronger and more consistent winds, enabling greater electricity production. By circumventing the need for expensive and complicated grid connections, the generated electricity can be used immediately to produce hydrogen from water via electrolysis.
Proponents argue that this direct production method could significantly lower the cost of green hydrogen—a fuel deemed essential for decarbonising heavy industries. It would also alleviate stress on local power grids, the project partners stated. Moreover, the hydrogen produced could be converted into other valuable products such as methanol or ammonia.
However, environmental think tank, the Wuppertal Institute, cautioned that Germany should enhance its domestic green hydrogen production capabilities rather than becoming overly dependent on imports.
The results of the onshore trials in Denmark are expected to provide insights into the feasibility and scalability of such systems for future offshore applications, potentially advancing Europe’s ambitions to lead in green hydrogen production and usage.