Explore the challenges and solutions for maintaining transmission grid stability in the face of large-scale power flows from renewable energy sources. Delve into the complexities of integrating intermittent renewable power generation into existing grid infrastructure, examining the impact on system reliability and efficiency. Learn about advanced control strategies, energy storage technologies, and smart grid innovations that help mitigate instabilities and ensure a smooth transition to a more sustainable energy future. Gain insights into the interdisciplinary approach required to address this critical issue, combining knowledge from power systems engineering, complex systems theory, and renewable energy technologies.