【国际能源署】核能新时代之路-2025_102页_5mb

The Path to a New Era for Nuclear Energy: Summary

Core Content

The International Energy Agency (IEA) report "The Path to a New Era for Nuclear Energy" outlines the growing role of nuclear energy in the global energy transition. It highlights the potential of nuclear to address energy security and climate concerns, supported by rising investment, technological innovation, and supportive policies in over 40 countries. The report emphasizes the importance of small modular reactors (SMRs) as a key driver of this transformation.

Main Views

• Nuclear Energy's Role: Nuclear is a proven, low-emission source of electricity and heat, currently providing nearly 10% of global electricity supply. It is the second-largest source of low-emissions electricity after hydropower, and plays a crucial role in energy security by reducing reliance on fossil fuel imports.

• Global Trends:

  • Electricity demand is growing rapidly, especially from new sectors like data centres and AI.
  • China is leading the expansion of nuclear capacity, with over half of current construction projects located there.
  • The nuclear industry has faced challenges due to high costs, long construction times, and technical complexity, but is now on the cusp of a resurgence.

• Technological Innovation:

  • SMRs are a game-changer, with potential to significantly reduce construction and financing costs.
  • The first commercial SMR projects are expected to start operations around 2030.
  • If SMR costs are brought down to match large-scale reactors, their deployment could triple by 2050, reaching 120 GW in a rapid growth scenario.

• Financing Challenges:

  • Nuclear projects require substantial investment and are difficult to finance due to their capital intensity and long timelines.
  • Public funding alone is insufficient; private investment is essential to scale up nuclear deployment.
  • SMRs can attract private capital due to their lower costs and modular design.

• Policy and Governance:

  • Governments play a critical role in providing strategic vision, policies, incentives, and de-risking mechanisms.
  • A diverse and secure supply chain is vital for the long-term sustainability of nuclear energy.
  • Regulatory frameworks that ensure transparency and safety are necessary for both public and private financing.

Key Information

• Current Status:

  • As of 2023, over 410 nuclear reactors are in operation across 30 countries.
  • Advanced economies host over 70% of the world's reactors, but these are largely aging, with an average age of over 36 years.
  • France and the Slovak Republic have the highest nuclear shares in electricity generation, at 65% and over 60%, respectively.

• Investment Outlook:

  • Annual nuclear investment has increased by nearly 50% since 2020, exceeding USD 60 billion.
  • By 2050, SMR capacity could reach 40 GW under current policy settings, but could grow to 120 GW in a rapid growth scenario.
  • Total investment in SMRs could reach USD 900 billion by 2050 in a rapid growth scenario.

• Supply Chain and Workforce:

  • Uranium supply and enrichment services are highly concentrated, with four countries accounting for over 75% of global production.
  • A skilled workforce and diversified supply chains are essential for the future of nuclear energy.
  • SMRs can help diversify supply chains and reduce construction timelines.

• Challenges:

  • The nuclear industry still faces challenges in financing, construction, and policy support.
  • The concentration of nuclear technology and uranium markets poses a risk to the sector's long-term sustainability.
  • SMRs must achieve cost reductions quickly to become viable for large-scale deployment.

Conclusion

The report concludes that while nuclear energy is making a strong comeback, its future depends on overcoming key challenges. Governments and the private sector must work together to support innovation, streamline regulations, and ensure a secure and sustainable supply chain. With the right policies and investment, nuclear energy, especially through SMRs, can play a pivotal role in the global transition to a secure and low-emission energy system.