The World Economic Forum (WEF) highlights the top four themes to monitor in the clean energy sector for 2025. Despite increased financing costs and geopolitical challenges, investment in clean energy solutions soared in 2024. Solar photovoltaic technology attracted $500 billion, surpassing all other generation sources, while battery storage investment exceeded $50 billion. Emerging technologies like energy storage, clean hydrogen, and advanced nuclear technology are gaining traction, driven by rapid cost reductions. Energy storage, in particular, has made significant progress, with the cost of lithium-ion batteries plummeting by over 90% in the past decade. AI's growth is driving a surge in electricity demand, challenging emission reduction goals. The nuclear energy sector is experiencing a shift in attitudes, with many acknowledging nuclear energy's role in the energy transition and discussing a potential nuclear renaissance. The sector is heavily focused on R&D and innovation to enhance technical parameters, drive down costs, and mature emerging technologies like batteries and carbon management solutions. WEF emphasizes the need for a mix of solutions to effectively navigate the energy transition, with a spotlight on industrial policy, AI's impact on energy demand, the nuclear renaissance, and continuous innovation in 2025.