In my own or in their own way? Evidence on the diffusion of renewable energy promotion instruments

Green energy policies have spread globally, as a means to promote societal transition towards more sustainable pathways of growth. In this framework, the European Union posed as a key actor, identifying the promotion of green energy policies as a cornerstone of all its strategies for green transition. While the literature has generally recognised the ongoing harmonisation process, still scant attention has been paid to the assessment of differentials in the diffusion of policies promoting various typologies of renewable energy sources. Moreover, the role of domestic factors tends to be overlooked. Based on these premises, the present research has aimed to study the role played by both policy diffusion mechanisms and adopting countries' characteristics for explaining the emulation of renewable energy policies. Our main results show that coercion enhances the likelihood of policy emulation, while the other mechanisms differently influence the policymaking process, based on the typology of renewable and on the level of development of the country. These results set the stage for relevant policy implications for promoting coordination and abatement of normative barriers existing among EU Member States. These recommendations become even more relevant given the unprecedented investments planned by the EU through the REpowerEU plan.