The transition towards a circular economy presents significant challenges and opportunities for the social economy sector. This paper explores the competencies, skills, and training required to facilitate this green transition, drawing on findings from the baSE project - a comprehensive European initiative under the Erasmus+ Program aimed at advancing skills and training in the social economy for green transition. Through a mixed-method approach encompassing literature reviews, surveys, and focus group discussions, the study identifies key skill gaps and training needs within the social economy sector, emphasizing the importance of innovative, accessible, and practical training solutions. The findings contribute to the development of strategic educational frameworks that align with circular economy objectives, highlighting the pivotal role of the social economy in becoming a sustainable and resilient socioeconomic system.