Energy is a fundamental part of our environment, and our endeavours to produce and to consume it have profound effects on that environment at a range of scales. Energy justice can be seen as a component of environmental justice and shares its theoretical reference points, whilst also gaining ground as a field in its own right. It also connects in important ways with climate justice and other environmental and social injustices. In this chapter, I explore how justice problems arise in relation to both our production and consumption of energy, not only with regard to our more established use of fossil fuels, but also in relation to new developments in clean energy. Ideas of justice provide important tools for thinking through how to establish energy systems that are not only clean, but also fair.