Voluntary instruments for ambitious objectives? The experience of the EU Covenant of Mayors

Over the last decade, innovative governance architectures have been progressively promoted across European Union (EU) environmental and climate policies with the purpose of improving the effectiveness of intervention through better cross-sectoral policy integration and increased involvement of sub-state and non-governmental actors in the policy process. By combining the theoretical insights of polycentric governance and the concept of usage, the case of the Covenant of Mayors (CoM) is analysed to uncover the extent to which this voluntary programme has empowered local authorities within the EU strategy for sustainable energy by encouraging coordination and learning. This illustrates how a range of policy variables determined the dynamics of the programme’s implementation in Italy and the United Kingdom.