In the advent of important crises of both climate change and energy supply (in)security, questions are being asked about changes in energy governance. Caroline Kuzemko explains how and why change takes place and discusses the convoluted UK energy governance system that has emerged between 2000 and the present day. She applies a complex theoretical approach based on new institutional concepts of policy paradigm change, but which also utilises concepts of (de)politicisation and securitization. UK energy governance, like energy policy elsewhere, is moving from one heavily influenced by neoliberal economic ideas to one where state intervention is more commonplace. Moreover, the new governance system is informed not by one but by multiple perspectives on energy and governance geopolitical, climate change and pro-market.