Smart Energy Power systems – encompassing oil, gas, nuclear, mining, and electricity – are undergoing rapid transformation driven by digitalization, decarbonization, and geopolitical uncertainty. Ensuring stability in energy communities within this complex, multi-sector landscape requires analytical frameworks that integrate both “hard” and “soft” dimensions of energy systems. This study proposes an integrated approach combining hard analyses, such as capacity and technical capability of energy infrastructures, as well as the security of supply of energy raw materials., with soft analyses, including international relations and energy diplomacy, in the context of stability in energy communities. By bridging technical and social perspectives, the framework captures interdependencies that are often overlooked when sectors or methodologies are treated in isolation. The paper conceptualizes energy communities as adaptive socio-technical systems in which technological performance and social acceptance co-evolve. Through comparative analysis across fossil fuel, nuclear, mining, and electricity domains, the study demonstrates how misalignment between hard and soft factors can amplify instability, while strategic integration enhances resilience and long-term sustainability. The findings highlight the necessity of interdisciplinary planning tools, data-driven decision support, and inclusive governance mechanisms to manage transition risks and operational uncertainties. This integrated model contributes to energy policy and systems engineering by offering a holistic lens for designing stable, smart energy power systems capable of supporting secure, equitable, and resilient energy communities in a rapidly changing global context.