Navigating the evolving landscape of energy systems demands a multifaceted approach that combines engineering expertise with a holistic understanding of societal, economic, and environmental considerations. Early career researchers (ECRs) play a crucial role in bridging these disciplines, fostering innovation, and driving sustainable energy transitions. This paper delves into the unique intersection where an ECR in the engineering field transcends traditional technical boundaries, venturing into the realm of social sciences to foster energy communities. By employing a transdisciplinary approach, ECRs are not only contributing to the technical advancements in energy systems but are also actively engaging in community leadership and development, as tenets of energy communities. The role of engineers in this context is redefined – from mere providers of technological solutions to facilitators and catalysts of community-driven change. However, cultivating these initiatives is not without its challenges. The paper investigates the various forms of uncertainty that pose significant barriers to the development of bottom-up energy initiatives. These include regulatory ambiguities, market fluctuations, evolving technological landscapes, and financial constraints. Central to this paper is a case study from North Macedonia – the first energy community in the country, which provides concrete insights into the practical aspects of building and sustaining energy communities in a transitioning energy landscape. This case study not only illuminates the challenges faced but also showcases the strategies and approaches employed to overcome them. It serves as a microcosm of the broader global challenge in transitioning to more resilient, community-driven, and sustainable energy systems.