MOL, MODEC propose offshore LCO2 unit

Mitsui OSK Lines Ltd (MOL) is collaborating with MODEC Inc on the development of a floating offshore facility for the storage and injection of liquefied carbon dioxide (LCO2).

According to MODEC, the proposed offshore LCO2 floating storage and injection unit (LFSI) is intended to support industrial-scale carbon capture and storage (CCS) operations.

The facility will accept LCO2 transported by shuttle tankers and subsequently inject it into offshore reservoirs.

The development was announced at Gastech 2025, taking place in Milan, Italy.

MODEC noted the unit incorporates design elements drawn from its experience in floating production, storage and offloading systems.

The company stated the LFSI design combines a floating platform equipped with LCO2 storage tanks and compression systems with a riser and wellhead arrangement for injection into subsea formations.

MODEC described this as an “integrated system for the offshore CCS value chain,” adding the design allows for flexibility in water depth and site conditions.

American Bureau of Shipping has granted approval in principle (AiP) for the LFSI design. MODEC said the AiP confirms the basic design concept meets applicable classification requirements and represents an important step towards commercial deployment.