This publication examines the sectors, technologies and policy measures that will be central in the transition to a low-carbon energy system. It addresses the following questions: (1) What are the roles of coal and gas in meeting the stringent decarbonisation requirements for the power sector consistent with IEA modelling of global climate goals? (2) What are moderate carbon prices accomplishing in the electricity sector, and how can they be helpful as part of a package of other policies?