The growing frequency of natural disasters and rising global energy demands highlight the critical need for resilient and sustainable energy infrastructure capable of withstanding and quickly recovering from disruptions. This research paper investigates the essential components of resilient energy systems, focusing on the integration of renewable energy sources and the development of robust emergency power management strategies. Resilient infrastructure is increasingly recognized as a foundational requirement for supporting critical services, such as healthcare, emergency response, and communication, especially during extreme weather events that can severely impact energy supply. Sustainable energy sources, particularly renewable energy, play a key role in enhancing resilience by reducing dependency on centralized grids and providing decentralized energy solutions that can remain operational even when traditional power systems fail. This study delves into the benefits of renewable energy integration for improving energy security and minimizing environmental impact, while also addressing the specific challenges associated with implementing these solutions, including grid compatibility, intermittent supply, and the need for effective energy storage. Through a comprehensive literature review, the paper evaluates current strategies for bolstering resilience, such as grid hardening, demand response, and distributed energy resource management, all of which contribute to a more adaptable and reliable energy framework. The discussion extends to the use of mathematical models, such as levelized cost of electricity (LCOE) and critical load factor (CLF), which provide a quantitative basis for optimizing resource allocation and ensuring cost-effectiveness in renewable integration.A case study on Nigeria’s energy sector offers insight into the unique challenges faced in developing nations, where aging infrastructure, limited access to technology, and financial constraints compound the difficulty of building resilient energy systems. In Nigeria, emergency power management for critical facilities, such as hospitals and government buildings, often relies on diesel generators, which are both costly and environmentally unsustainable. The integration of solar and wind energy, paired with energy storage systems, presents a viable alternative that enhances resilience while supporting Nigeria’s goals for sustainable development. This case study underscores the need for localized solutions that consider the socio-economic and environmental context of each region, as well as the importance of international partnerships and investment in achieving sustainable and resilient infrastructure.Overall, this research advocates for a dual approach combining renewable integration and emergency power management to create energy systems that not only withstand disruptions but also contribute to long-term sustainability. By exploring current technologies, mathematical frameworks, and practical applications, the paper provides a roadmap for developing resilient energy infrastructure that aligns with global sustainability goals. Future research and policy development should prioritize the scalability of renewable technologies and the creation of culturally and regionally adapted resilience strategies, supporting a cleaner, more secure energy future for vulnerable communities and critical facilities worldwide.