The IPOSH project, supported by the Dutch TKI Offshore Energy Programme, is focused on revolutionizing offshore hydrogen production efficiency. One of the key aspects of the project is the innovative approach to electrolyser design. Unlike traditional methods, the IPOSH project considers all components equally important from the outset, leading to cost savings and improved efficiency. The project will adopt a lifecycle-based methodology to evaluate various critical aspects of offshore hydrogen systems. By analyzing factors like plant design, maintenance, and decommissioning, the project aims to enhance the overall efficiency and longevity of the systems. Furthermore, the IPOSH project aims to establish general requirements for offshore electrolysis, addressing factors such as system footprint, maintenance needs, and environmental impact. By taking a holistic approach to system optimization, the project partners aim to identify the most cost-effective and scalable configurations for offshore hydrogen production. TNO plays a significant role in the IPOSH project by contributing to model-based analysis, lifecycle-based methodology, and supporting the system engineering approach. Through their expertise in energy transition and sustainable technologies, TNO aims to ensure the success of the project and contribute to the development of efficient offshore hydrogen production systems.