The GRETA project aims to improve understanding on the conditions and barriers for energy citizenship emergence. Energy citizenship has come to represent a form of active participation within energy systems that ultimately supports local and global decarbonisation goals. It can manifest in many different ways, such as individual homeowners choosing renewable energy solutions or electric vehicles, participation in energy communities, or advocating for climate change. But not everyone has the possibility to participate. This can be due to a range of factors, including being unaware of issues or their practical solutions; being excluded from debates and decision-making; being prevented from taking action due to lack of resource or lack of power. Through a multinational survey and six participatory case studies, GRETA will develop frameworks and models aimed to reveal what factors affect energy citizenship. These will be utilized within case studies to identify problems, frame solutions and reach consensus on roadmaps for change, formalized through Energy Citizenship Contracts. Findings throughout the project will be utilized to inform and encourage policymakers to advocate energy citizenship.