"The history of energy system change shows it is closely associated with social change, and the timeframe for the zero-carbon transition closely matches that for delivery of the UN Sustainable Development Goals. The zero-carbon transition will therefore need to ensure delivery of basic energy services globally, and radical changes in energy using practices worldwide. This implies major challenges for governance, in particular related to equity, which are closely linked to the technical challenges. Research, therefore, needs to be inter-disciplinary and take a whole system approach."