International shipping faces increasing pressure to reduce GHG emissions in order to meet IMO’s targets.
While low- and zero-carbon fuels are expected to be the primary drivers of emissions reductions, uncertainties surrounding their availability and high cost premiums are driving increasing interest in onboard carbon capture and storage (OCCS) as part of the portfolio of solutions.
However, the adoption of OCCS faces significant challenges, requiring optimising around its “trilemma” for adoption:
- High CAPEX: Upfront investments are required for OCCS installations.
- Increased OPEX: Increased OCCS systems are energy intensive, leading to higher fuel consumption, increased O&M and manpower requirements to operate the system.
- CO₂ capture rate: The CO₂ capture rate has to be high enough to meet regulatory requirements AND justify the additional CAPEX and OPEX for vessel operations to remain commercially viable.
Consequently, OCCS installations must navigate this trilemma, balancing CAPEX, OPEX, and CO₂ capture rates.
This is one of the areas Project REMARCCABLE* investigated.
Check out the infographic on the optimal CAPEX, OPEX, and CO₂ capture rate based on an OCCS retrofit for the Stena Impero, an MR tanker.
For the full report, please check it out here.
*Project REMARCCABLE was supported by a consortium comprising American Bureau of Shipping, Alfa Laval, Deltamarin, Lloyd’s Register, Seatrium, and TNO.
