Carbon intensity of electricity generation (a) and fuel use in other sectors (b) for an ensemble of 1.5°C and 2°C pathways derived from integrated assessment models (SSP1-1.9, SSP2-1.9, SSP1-2.6, SSP2-2.6 from the AIM, IMAGE, MESSAGE-GLOBIOM and REMIND-MAgPIE models). Black lines denote the stylized carbon intensity cases developed for the sensitivity analysis in this paper. (Online version in colour.)