Research on sustainability transitions has expanded rapidly in the last ten years, diversified in terms of topics and geographical applications, and deepened with respect to theories and methods. This article provides an extensive review and an updated research agenda for the field, classified into nine main themes: understanding transitions; power, agency and politics; governing transitions; civil society, culture and social movements; businesses and industries; transitions in practice and everyday life; geography of transitions; ethical aspects; and methodologies. The review shows that the scope of sustainability transitions research has broadened and connections to established disciplines have grown stronger. At the same time, we see that the grand challenges related to sustainability remain unsolved, calling for continued efforts and an acceleration of ongoing transitions. Transition studies can play a key role in this regard by creating new perspectives, approaches and understanding and helping to move society in the direction of sustainability.

Energy justice has emerged as a new crosscutting social science research agenda which seeks to apply justice principles to energy policy, energy production and systems, energy consumption, energy activism, energy security and climate change. A conceptual review is now required for the consolidation and logical extension of this field. Within this exploration, we give an account of its core tenets: distributional, recognition and procedural. Later we promote the application of this three-pronged approach across the energy system, within the global context of energy production and consumption. Thus, we offer both a conceptual review and a research agenda, providing suggestions of how the field of energy justice could be advanced. Throughout, we explore the key dimensions of this new agenda -its evaluative and normative reach -demonstrating that energy justice offers, firstly, an opportunity to explore where injustices occur, developing new processes of avoidance and remediation and recognizing new sections of society. Secondly, we illustrate that energy justice provides a new stimulating framework for bridging existing and future research on energy production and consumption when whole energy systems approaches are integrated into research designs.In conclusion, we suggest three areas for future research: investigating the non-activist origins of energy justice, engaging with economics, and uniting systems of production and consumption.

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The continuation and exacerbation of many environmental failures illustrate that environmental and climate justice's influence on decision-making is not being systematically effective, giving rise to a renewed emphasis on finding new, more focused, justice models. This includes the energy justice concept, which has received ready and growing success. Yet for energy justice, a key question keeps arising: what does it add that environmental and climate justice cannot? To answer this question this perspective outlines the origins, successes and failures of the environmental and climate justice concepts, with a view to both distinguishing the energy justice field, and providing cautionary tales for it. It then outlines three points of departure, which it argues increases the opportunity of success for the energy justice concept: (1) "bounding out", (2) non-anti-establishment pasts and (3) methodological strength. This paper exists to stimulate debate.