GESGB London Evening Lecture – July 2025 (Hybrid)

Speaker: Nick Terrell, Co-founder and Executive Director – Carbon Catalyst

Topic: The UK Poseidon CO₂ Injection Test: Pioneering Commercial Carbon Storage in the North Sea

Date: Tuesday 1 July 2025

Timings: 17:30 – Doors open / 18:00-19:00 – Lecture / 19:00-20:00 – Networking drinks

Venue: The Linnean Society of London | Burlington House, Piccadilly, London W1J 0BF
The venue is located 5-minutes’ walk from Green Park and Piccadilly tube stations. The lecture will be held in the Meeting Room on the ground floor.

Networking Drinks: The Clarence – 4 Dover Street, W1S 4LB
Self-funded bar.

The presentation will be available to view via live stream on Zoom.
Login details will be sent to registered attendees one day prior to the event.

This London Evening Lecture is kindly sponsored by:

GESGB members can register free of charge via the membership platform

If you are interested in becoming a member of GESGB please visit: https://www.ges-gb.org.uk/membership/

The UK Poseidon CO₂ Injection Test: Pioneering Commercial Carbon Storage in the North Sea

With a new wave of early-stage Carbon Capture and Storage (CCS) projects now under construction across NW Europe, this GESGB Evening Lecture will examine the transition of CCS from subsidy reliance to a commercially viable model for industrial decarbonisation.

We will share timely insights from Carbon Catalyst’s joint ventures with Perenco, Harbour Energy, and SEEL (Sumitomo), with a spotlight on the UK’s first CO₂ injection test for Carbon Capture and Storage. Conducted in a highly depleted natural gas reservoir in the Southern North Sea, this test has generated vital data demonstrating the feasibility of using highly depleted reservoirs for permanent geological CO₂ storage.

The Poseidon CO₂ injection test marks a major milestone in advancing offshore carbon storage, becoming the first global trial of its kind in an ultra-depleted gas reservoir. Conducted in an abandoned segment of the North Sea’s Leman field, the test aimed to prove the technical viability of safe, commercial-scale CO₂ storage, while also validating the reuse of existing infrastructure and next-generation monitoring technologies. Over a three-month winter window, around 3,500 tonnes of CO₂ were injected via a specially outfitted jack-up rig, using liquid phase CO₂ sourced from the Netherlands and transported offshore in cryogenic tanks.

In its fully operational phase, the Poseidon Project aims for an initial injection capacity of 1.5 million tonnes per year (Mtpa) from 2029, scaling to a peak injection of 40Mtpa. Located in the Leman gas field, the project offers a total storage potential of around 1 billion tonnes making it one of the world’s largest offshore CO2 transport and storage sites.

Poseidon will connect to the Perenco-operated Bacton Terminal in Norfolk and is strategically located to deliver decarbonisation solutions to East Anglia, London and the Southeast, as well as Continental Europe.

We will also explore how projects like Poseidon can help transition the CCS sector from a government-subsidised model to a commercially viable market, incorporating insights from industrial, finance and regulatory stakeholders.

Nick Terrell, Co-founder and Executive Director – Carbon Catalyst

Nick is co-founder and Executive Director at Carbon Catalyst, an independent UK company dedicated to delivering Carbon Capture and Storage (CCS) solutions for large-scale decarbonisation. Established in 2020, Carbon Catalyst is advancing two UK carbon transport and storage projects, Poseidon and Orion.

Previously, Nick served as Chair of the UK Subsurface Task Force, a collaborative forum of subsurface experts, scientists and senior professionals from industry and academia. The forum works closely with regulators, policymakers and other key stakeholders to support an orderly transition to Net Zero by 2050.

Nick’s earlier roles include Managing Director of North Sea operator Azinor, Exploration Director at US independent Endeavour Energy, board member of Offshore Energies UK and President of the GESGB in 2017.

Thank you to Carbon Catalyst for kindly sponsoring this GESGB London Evening Lecture.

We are an independent company dedicated to delivering Carbon Capture & Storage (CCS) solutions for large scale decarbonisation. Since our founding in 2020, we have been developing a high-quality portfolio of carbon transport and storage projects across the North Sea, leveraging our expertise in technical, commercial and operational excellence. With strong industry links across the entire CCS value chain, we are committed to driving impactful, scalable solutions for a decarbonised industrial future.

Find out more information: https://carboncatalyst.com/