After a winding development path full of challenges throughout history, thanks to the intervention of technology, public libraries have evolved in the last decades from traditional libraries to true ecosystems of operational services grafted on the current needs of users. Being perceived rather as conservative institutions, in order to remain relevant, public libraries have been forced to innovate, especially in terms of service-related aspects. Gradually, under the pressure of users, they have integrated various applications and technologies which today allow for a better connection with the audience and a better solution to the specific needs of library service beneficiaries. This paper explores the different understandings of the concept of “renewable knowledge” in the context of public libraries, positioning these institutions as essential spaces for the creation, transfer and long-term capitalization of this knowledge. Through a systematic clarification of terminology, the study analyzes in depth the dynamics of generating and preserving renewable knowledge, emphasizing their role as a universal public good that encourages creativity, co-creation and transformative learning. This research provides a future-oriented perspective on understanding and modeling “renewable knowledge” in libraries and the impact of this transformation on the knowledge assets of learning communities. The author investigates and critically evaluates how the generation of knowledge - understood as the result of interpersonal interactions - makes libraries become nodal centers for conservation, valorization and reuse of renewable knowledge elements. By analyzing the complex process of aggregating renewable knowledge and its distinctive features compared to other knowledge typologies, the present research attempts to clarify how foundational knowledge can be transformed into renewable knowledge. Current work highlights the potential of libraries to serve as critical facilitators in this process of transforming collective knowledge into renewable knowledge assets, leveraging the unique and privileged position of libraries within communities. This article investigates the interest of library and information science professionals in identifying reusable facets of knowledge from the value-added perspective of modern technology-based library services. Using a mix consisting of a Questionnaire and a Structured Interview, this paper explores the role of public libraries as catalysts in the complex process of renewable knowledge development. Highlighting the dynamic and adaptive nature of the acquisition and dissemination of renewable knowledge, this article examines the potential of public libraries to creatively engage with communities, integrate technology, and propagate knowledge in a coherent and sustainable manner. The findings attest to the idea that public libraries have the ability to adapt to the changing information landscape, strengthening their democratic role in the contemporary knowledge society and contributing to the development of intelligent, inclusive and connected communities. In supporting the research results, the author offers as an example a concrete case of application of the concept of renewable knowledge in libraries, carried out within the Horizon project SHIFT: MetamorphoSis of cultural Heritage Into augmented hypermedia assets For enhanced accessibiliTy and inclusion. Being a use study based on the recent practice of libraries in Romania, the practical example refers to the empowerment of pre-existing digital stories with new values based on elements of renewable knowledge. This use case demonstrates once more that the integration of advanced digital technologies can substantially revive the preservation and accessibility of cultural heritage, making it accessible even for users belonging to vulnerable groups.