Sustainable Energy & Process Engineering focuses on processes of energy or material conversion that enable our everyday supply of heat and electricity as well as products such as sugar, toothpaste or medicines. Whilst engineering of these processes has been very successful to enable mass production at low cost, sustainability requires a holistic optimization, also considering aspects such as climate impact, waste and pollution, impact on society on a global scale, or dwindling resources. Novel approaches, ranging from continuous integrated production processes, biologically inspired systems to miniaturization, promise the combination of economic and ecological benefits.