The Poseidon carbon storage project has reached another important milestone with the launch of Pre-FEED surface studies, led by Perenco UK in partnership with Genesis. This next phase marks the beginning of detailed planning for the project’s first commercial stage, a major step toward developing a scalable, ship-based CO₂ transport and storage network in the UK Southern North Sea.
Poseidon is being developed by Perenco UK, Carbon Catalyst, and Harbour Energy to repurpose the Leman gas field into a permanent CO₂ storage site. Building on the success of the UK’s first offshore CO₂ injection test earlier this year, the project is demonstrating how existing North Sea infrastructure can be safely and efficiently transitioned to support the energy transition.
A new phase of delivery
The Pre-FEED will define the surface scope of Poseidon’s initial commercial phase, which will enable the transport and permanent storage of up to 1.5 million tonnes of CO₂ per year. CO₂ will be shipped in liquid form by converted cargo vessels and injected directly into two existing wells within depleted compartments of the Leman field.
By reusing established offshore platforms and wells and integrating new operations alongside ongoing gas production, the project aims to significantly reduce both capital and operating costs, while minimising environmental footprint. This approach demonstrates the potential for pragmatic, capital-efficient carbon storage development, a model that could be replicated across the North Sea basin.
Proven data, proven delivery
The empirical data gathered during the 2024 offshore CO₂ injection test has provided critical insight into reservoir behaviour, injection dynamics, and monitoring performance. This evidence base underpins the Pre-FEED phase, giving partners and future customers confidence in Poseidon’s technical feasibility and commercial viability.
Perenco’s long-standing operational expertise in the Southern North Sea, combined with Genesis’s experience in major offshore CCS design and delivery, provides a strong foundation for the project’s next phase. Together with Harbour Energy and Carbon Catalyst, the consortium is aligning engineering, policy, and commercial progress to help unlock large-scale CO₂ storage capacity for the UK and beyond.
Building a new storage network for the UK
Poseidon is designed to offer a flexible, commercially attractive solution for emitters with hard-to-abate industrial or biogenic CO₂ sources located away from pipeline networks. By pioneering ship-based transport, the project opens access to storage for a wider range of customers across the UK and Europe, supporting both domestic decarbonisation and cross-border cooperation.
With Pre-FEED now underway, Poseidon continues to build momentum as a cornerstone of the UK’s emerging carbon storage infrastructure.