The decarbonisation of power production, industry, transport and heating to meet climate change targets is a major challenge and one that intrinsically involves the subsurface and geoscience. Here we report a summary of the 2019 Bryan Lovell conference, where thirty expert speakers examined decarbonisation from the point of view of what the subsurface can offer, and came to the conclusion that there are a number of technologies that will make a real difference to our ability to decarbonise.@en