Decarbonisation is often taken to mean the end of fossil fuels. But it could become more feasible simply to de-carbonise fossil fuels. This 19-page note explores two top opportunities: next-generation combustion technologies, which can meet the world’s energy needs relatively seamlessly, with zero carbon and little incremental cost. They are ‘Oxy-Combustion’ using the Allam Cycle and Chemical Looping Combustion. Leading Oil Majors support these solutions to create value advancing the energy transition.