The Energy Systems Research Group (ESRG) is a multi-disciplinary team housed in the Department of Chemical Engineering at the University of Cape Town. It combines modelling of energy and economic systems with policy analysis and field-based research to generate and enhance knowledge of energy systems at sectoral, regional, national and sub-continental scales, focused on South Africa and the SADC region. The ESRG works extensively with external non-academic partners across government, civil society and industry. The ESRG has served as the South African country team within the Deep Decarbonisation Pathways (DDP) network since the project’s inception, producing the country’s first deep decarbonisation pathways analysis and continuing to develop mitigation scenarios and detailed assessments of specific elements of South Africa’s Just Transition.