Renewable energy transitions are occurring across the globe in response to climate change. Such socio-technical transitions are complex and non-linear. They require bold leadership and innovative policy, both in response to environmental risk and to navigate political, technical and socio-economic conditions. This paper integrates complex adaptive systems and risk society theory to inform a discussion on regional socio-technical transitions. South Australia is forging its own adaptive pathway, and in doing so, is leading energy transitions in Australia. Utilising the complex adaptive cycle to frame the state's renewable energy transition, the path can be seen to be evolving from a simple first modernity to a multi-dimensional second modernity. Socio-technical transitions are partly a by-product of responses to risk. While there is no single map for navigating societal transitions, this paper proposes that risk, in the context of risk society theory, is an important guiding dimension for understanding transformational change in socio-technical systems.