In which fields will the CO​₂​ be stored? Who owns those fields?

From the platform, CO₂ will be permanently stored in empty (depleted) gas fields three to four kilometres below the North Sea floor. Porthos focuses on storing CO₂ in the empty gas fields P18-2, P18-4 and P18-6.

TAQA has extracted gas from these fields and the fields are available for storage. From the existing platform of P18A, operated by TAQA, Porthos will inject the CO₂ into the empty gas field.