The joint industry programmes such as Operation Zero and the Departments for Transports Maritime Decarbonisation roadmap have identified the Offshore Wind's Maritime sector as a one of the first users at scale for zero emissions fuels based on Hydrogen. However the retail price of delivered hydrogen is extremely high at the moment which varies from £150/kg to £700/kg, which is a major barrier for the adoption of hydrogen to displace diesel. Engas Global an electrolyser and hydrogen compressor company, in collaboration with DB Agri Ltd a biogas farm company in Steyning-West Sussex, and Cox Powertrain an outboard manufacturer based in Shoreham, supported by Offshore Renewable Energy Catapult are creating together a localised green hydrogen supply chain to meet the local needs without transporting hydrogen from far-away places at much lower cost due the innovative technologies such as a patented electrolyser to make hydrogen, hydrogen compressor, smart-hydrogen storage system, and dedicated hydrogen-trailers to supply hydrogen to the customers promptly and cost effectively, thus offering a complete end to end solution. This project will develop and test new business models of green-hydrogen storage and delivery which can be scaled up and replicated elsewhere the UK. This green hydrogen supply chain project is timely and consistent with government's Ten-Point-Plan towards net zero. Electrolytic green-hydrogen prevents about 10kg CO2 emission/kg hydrogen when it is produced by currently dominant method of Steam-methane-reformation process. Exceptional growth is forecast in the next 5 years in green hydrogen sector to unlock the potential in the UK and exporting the technology abroad. The innovative solutions of this project will help to accelerate hydrogen-technologies as more and more customers adopt green hydrogen. For every 1kg hydrogen produced there is also 7.8kg Oxygen produced as a free by-product and oxygen used by water companies for waste water treatment, or in high-temperature process-industries (steel/ cement/ glass etc). The focus of this project is to create an integrated business model by: i) lowering the cost of hydrogen production due to an innovative electrolyser technology; ii) lowering the cost of hydrogen-storage due to a novel low maintenance robust hydrogen compressor that is easy to service and not dependent on specialised hydrogen-skills; iii) enabling better logistical planning due to remotely readable smart-hydrogen storage system, and iv) faster delivery by introducing dedicated hydrogen trailers that can be driven around in local roads without the need for expensive lifting by Hi-ab trucks.

Scalability, affordability and adaptability are paramount to the adoption of low carbon fuel sources within the maritime sector. Maritime operations are paramount to the efficient movement of goods nationally and globally but are often high contributors of CO2e emissions and air pollutants. The adoption of decentralised energy systems offers the potential to support the necessary transition of ports and their operations to a net-zero with carbon and climate positive. The 'Shipping, Hydrogen & Ports Ecosystems UK' (**SHAPE UK**) project aims to demonstrate an achievable modular green hydrogen generation system within Portsmouth International Port (**PIP**) delivering a decision support tool that will enable port managers to determine the environmental and economic use cases for hydrogen generation and utilisation. This project will be a catalyst and early foundation programme for the Solent Freeport innovation hub to build upon. It will address the barriers to installing Hydrogen (**H2**) generators within the maritime landscape. Modular H2 electrolysers offer flexibility and adaptability to expand production capability and utilise excess renewable electricity as it is generated, but the current high cap-ex costs can prohibit their adoption. This is combined with the emerging regulatory frameworks for the generation/ storage and utilisation as a marine fuel source. The work undertaken here aims to determine the utilisation of a modular electrolyser within an active port. A digital twin of the port will be created that can be reproduced for other ports: existing and emerging data from the port and its activities will be combined with the data gathered from the working electrolyser. This software will then be utilised with key stakeholder ports across the UK to determine the economic and environmental suitability of deploying H2 systems within their operations. A retrofitted common diesel outboard to utilise up to 99% H2 and 1% diesel will demonstrate a use case for the portside hydrogen for their support fleet. The regulatory landscape around which the electrolyser and the use of H2 in fleet vehicles will be reviewed and analysed, determining where deployment can immediately occur and where regulations need to be addressed.

The objective of this collaborative R&D project is to deliver a 10 metre (10m) 'high efficiency work vessel' (HEWV) technology demonstrator to TRL6; as applicable to popular 6m through 11m all-weather utility craft for survey, patrol, fast ferry, tourism and fishing. The project includes further Computational Fluid Dynamics (CFD) analysis and design to apply those technologies and optimise hydrodynamic efficiency for 15 and 20m vessels in growth markets; e.g. offshore support. Innovations showcased by the 10m technology demonstrator include new high power density 300hp diesel outboard engines that are optimised for and integrated with a modified, representative, lightweight and low drag hull; delivering 25% fossil fuel savings and 10% material weight savings compared with equivalent craft with gasoline outboard engines. Innovations covered by the CFD analysis and design work include accelerated development of high powered diesel outboards and 'stern-pod' engines, integrated with a new design lightweight and low drag 15m and 20m hull; delivering 35% fossil fuel savings and up to 50% material weight/cost savings compared with current 15m and 20m work vessels with inboard diesel engines.