The European Union (EU) is rapidly transforming its energy landscape with the goal of becoming the world's first climate-neutral economy by 2050. Yet, nearly 10% of EU population struggles with basic energy needs. Renewable Energy Communities (RECs) - citizen-led initiatives for local clean energy production and sharing – are seen as a solution for combating energy poverty and meeting the EU’s climate targets. Does this model ensure that “no one is left behind” in the energy transition, as envisioned by the EU Green Deal? RECLAIM addresses this pressing question by evaluating how effectively RECs engage with vulnerable groups, particularly those at risk of energy poverty. It focuses on rural areas, which have long faced ecological, social and economic fragilities and are now central to the expansion of new energy developments. RECLAIM aims to: 1) identify vulnerabilities to energy poverty within emerging RECs; 2) assess how RECs facilitate participation and benefit-sharing among vulnerable groups and 3) implement community practices to enhance inclusion. RECLAIM introduces a transdisciplinary approach that weaves together advanced quantitative methods - such as multi-dimensional spatial analysis, Earth Observation, and vulnerability assessment - with qualitative tools, including surveys and participatory research. This innovative approach is made possible through collaboration with leading climate science institutes at CMCC, a secondment with the GIScience Laboratory at the University of Padova, a non-academic placement with an innovative energy start-up, and ongoing interactions with a diverse network of stakeholders engaged in local RECs. As a result, this project creates a unique training environment, boosting the Researcher’s skills and career. Finally, RECLAIM’s methodology aims to set the groundwork for future research pathways aiming to assess the complex impacts of the energy transition, with an emphasis on inclusivity and social equity.