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Commencement of injection operations at Poseidon

Carbon Catalyst announces the commencement of injection operations at Poseidon
Carbon Catalyst Limited (CCL) is pleased to announce the commencement of the Poseidon
CO2 injection test on Monday, 10th February. This groundbreaking operation, the first of its
kind in UK waters, marks a significant milestone for both the UK and the Poseidon Joint
Venture (PJV). CCL would like to express its gratitude to the PJV operator, Perenco UK, for
achieving this key landmark.
The Poseidon injection test utilises Petrodec’s Erda rig, specially equipped for the injection of
CO2 into the H compartment of the Leman depleted gas field in the UK Southern North Sea.
This operation follows the successful recompletion of the H27 well in August 2024.
Following a successful injection test, the PJV will progress towards a Final Investment Decision
(FID) in 2027, and first commercial CO2 injection for permanent storage in 2029. It is
anticipated that Poseidon will target an initial annual injection capacity of 1.5 million tonnes
of CO2, scaling up to an ultimate annual injection rate of 40 million tonnes. Given this, and the
potential 1 billion tonnes storage capacity, Poseidon is set to become one of the largest Carbon
Capture & Storage projects in Northwest Europe.
Nick Terrell, Executive Director at Carbon Catalyst, commented:
“CCL is delighted to announce the start of CO2 injection at Poseidon. This project has the
potential to play a very significant role in decarbonising both the UK and Continental European
economies. As such, reaching this milestone is an extremely positive step in derisking the
project and advancing it towards commercial viability.

poseidon injection tests 2

About Carbon Catalyst Limited

CCL is an independent UK company dedicated to delivering innovative 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, operational and financial excellence. With strong industry relationships across the entire CCS value chain, we are committed to driving impactful, scalable solutions for a decarbonised industrial future.

For more information: Please visit www.carboncatalyst.com
Media Enquiries: Please contact info@carboncatalyst.co.uk

About Project Poseidon

Poseidon envisions the permanent geological storage of approximately one billion tonnes of carbon dioxide (CO₂) into the UK’s largest depleted gas field, the Perenco-operated Leman gas field, and other adjacent storage reservoirs within the carbon storage licence. The project is scheduled to be operational by 2029, with initial CO₂ injection rates of 1.5 million tonnes per annum (Mtpa), increasing to 40 Mtpa over a 40-year period. Poseidon will connect a wide range of CO₂ emitters across East Anglia, London, and the wider Southeast of the UK via the PUK-operated Bacton Gas Terminal to the offshore Poseidon geological storage sites.

For more information, please visit https://perenco-ccs.com

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