De-Carbonising Carbon?

Decarbonisation is often taken to mean the end of fossil fuels. But it is more feasible simply to de-carbonise them, with next-generation combustion technologies.

This 19-page note presents our top two opportunities: ‘Oxy-Combustion’ using the Allam Cycle and Chemical Looping Combustion. Both can provided competitive energy with zero carbon coal & gas.

Leading Oil Majors are supporting these solutions, to create value while advancing the energy transition.


Carbon capture remains an “orphan technology”, absorbing just c0.1% of global CO2. The costs and challenges of current technologies are profiled on pp2-4.

Energy penalties are particularly problematic. Paradoxically, the more CCS in our models, the longer it takes to de-carbonise the energy system (see pp5-6).

Next generation combustion-technologies are therefore necessary…

Allam Cycle Oxy-Combustion burns CO2 in an inert atmosphere of CO2 and oxygen. We evaluate a demonstration plant and model strong economics (see pp12-15).

Chemical Looping Combustion burns fossil fuels in a fluidized bed of metal oxide. We profile the technology’s development to-date, net efficiency and levellised costs, which are passable (pp8-11).

Oil Majors are driving the energy transition. We count ninety patents from leading companies to process CO2, including 30 to de-carbonise power. The best advances are profiled from TOTAL, Occidental, Aramco and ExxonMobil. (See pp16-19).