Nuclear energy is undergoing a renaissance as countries and industries recognize the limitations of renewable sources alone in meeting increasing energy demand. Advanced nuclear technologies, including fusion and small modular reactors (SMRs), are being developed to address safety, cost, and waste management issues in the nuclear energy sector. While nuclear fusion shows potential for near-endless energy with minimal emissions, it faces challenges in energy output. SMRs, on the other hand, are closer to commercial deployment, providing decentralised, low-carbon energy solutions with enhanced safety features. Innovative start-ups are also focusing on reducing nuclear waste volume and toxicity, aiming to accelerate the energy transition. To bring these advanced nuclear technologies to market, new policies, regulations, and public trust initiatives are essential. Investors are increasingly funding these technologies, signaling a positive outlook for the future of nuclear energy in the clean energy transition.