To meet its growing energy demand and reduce carbon emissions, South Africa is committed to decreasing its reliance on coal-fired power plants by maximizing the integration of variable renewable energy sources into the national grid. However, the transition to a renewable energy-dominated system presents significant challenges, particularly in managing transmission constraints, ensuring grid reliability, and addressing socio-economic and regulatory barriers. This paper aims to identify and address the critical challenges in this transition. Key findings highlight major challenges: the electricity sector faces grid instability due to the variability and intermittency of renewable energy, while municipalities struggle with aging transmission infrastructure and distribution grid congestion. Additionally, fiscal constraints severely limit funding for essential projects in generation, transmission, and distribution, while complex regulations and administrative delays further slow the development of renewable energy projects. These challenges pose serious risks to South Africa’s energy future, underscoring the urgent need for innovative and coordinated solutions. By exploring these issues in depth, this paper offers actionable insights and strategies aimed at overcoming the barriers to creating a sustainable and resilient energy system.