We are often asked why capture efficiencies in carbon capture and storage (CCS/CCUS) systems are traditionally cited at 90 per cent – the boilerplate rate used for the 30-year lifespan of the world-renowned Boundary Dam 3 CCS Facility (BD3) – versus 100 per cent that would appear to be the better target. The 90 per cent target has been assumed for decades with the origins being unclear…