Abstract
<jats:p>In examining energy security, Ukrainian scholars tend to emphasize security-related dimensions, including the protection of critical infrastructure and counteraction to military threats, whereas international researchers focus more extensively on market integration, diversification of energy sources, and sustainable development. Taken together, these approaches form a comprehensive understanding of energy security as a strategic component of contemporary policy and provide in-depth analysis alongside practical recommendations for developing energy security systems at both the enterprise and national economic levels, taking into account current challenges and trends in the energy sector. However, issues related to the systemic and conceptual foundations of energy security under shock conditions remain insufficiently addressed, which constitutes the primary focus of this study. Particular attention is paid to such economic concepts as fluctuations and shocks. Economic fluctuations represent a fundamental characteristic of any economic system, reflecting the inherent cyclicality of economic processes and variations in the level of economic activity. In contrast, a shock is defined as a distinct disruptive economic factor that emerges under crisis conditions and is characterized by sudden and significant changes in the economic environment, resulting in deviations of key macroeconomic indicators from their equilibrium state. The study considers types of shocks inherent in the contemporary economic situation, including military and technological shocks, and substantiates the existence of shock dualism, whereby both types of shocks ultimately lead to processes of economic adaptation. It is demonstrated that economic adaptation serves as a key mechanism enabling economic systems to respond to static and dynamic socioeconomic changes. The correlation between economic adaptation and both economic and energy security is also established. A novel paradigm of energy security transformation under shock conditions is thus conceptualized as an integrated framework for establishing the foundational principles necessary to maintain an optimal level of protection of the economic system. The shift towards a decentralized model of energy sector development is impossible without addressing complex scientific and technological challenges and incurring substantial material costs, which in turn necessitates greater openness and freedom in the movement of information, technologies, and capital across different levels of governance. Decentralization in the energy sector creates conditions for more efficient resource utilization, enhances innovation potential, and facilitates the formation of a new system of economic security capable of addressing the challenges of sustainable development.</jats:p>