未来能源情景2021-299页_33mb

Future Energy Scenarios (FES) 2021 Summary

Core Content

The Future Energy Scenarios (FES) 2021 document outlines four credible pathways for the UK's energy system transformation between now and 2050, all aiming to achieve net zero emissions by 2050. These scenarios are based on extensive stakeholder engagement, modeling, and research, and are used to inform energy policy, investment, and network planning.

Main Viewpoints

• Net Zero Targets: The UK has a legal commitment to reduce emissions by 78% by 2035 (vs. 1990 levels) and achieve net zero by 2050. The FES 2021 scenarios are aligned with these goals.
• Four Scenarios: Each scenario represents a different speed and method of decarbonisation:
  • Steady Progression: Slowest decarbonisation, with significant reliance on natural gas and limited hydrogen use. Emissions are reduced by 73% by 2050.
  • System Transformation: Emphasises supply-side changes, such as widespread use of hydrogen for heating and industry, and high levels of bioresource use.
  • Consumer Transformation: Focuses on consumer-driven changes, including high levels of energy efficiency and smart technologies. It results in the highest peak electricity demand and reliance on demand-side flexibility.
  • Leading the Way: Fastest decarbonisation path, combining high consumer engagement and advanced technology. The UK reaches net zero by 2047 and achieves net negative emissions by 2050.
• Energy Mix and Technologies: The scenarios explore the role of hydrogen, electricity, and natural gas in the future energy system. Hydrogen is used in challenging sectors like industry, while electricity dominates residential and transport sectors.
• Flexibility and Digitalisation: Flexibility becomes more important as electrification increases. Smart technologies, digital solutions, and demand-side response are critical for managing supply and demand fluctuations.

Key Information

• Energy Demand Trends: All scenarios show lower emissions by 2030 compared to FES 2020. Three of the four scenarios reach net zero by 2050.
• Carbon Budgets: Carbon budgets set legally binding targets for cumulative emissions. Even if some scenarios appear to meet annual targets, cumulative emissions may exceed the budget.
• Consumer Engagement: In all scenarios, consumer behavior and engagement play a key role. The most transformative scenarios involve significant changes in how consumers use and manage energy.
• Infrastructure Needs: Significant investment in grid infrastructure, including offshore wind, interconnectors, and hydrogen storage, is required to support the energy transition.
• Impact of COVID-19: The pandemic caused a drop in energy demand, particularly in 2020, with electricity demand falling by up to 18% during lockdowns. However, long-term impacts are expected to be minimal, and the UK is on track for recovery in 2021 and 2022.
• Policy and Market Design: Clear policy direction and market design are essential for achieving net zero. Coordination between government, regulators, and industry is necessary, alongside competitive markets to drive innovation and cost efficiency.

Scenario Details

What This Means

• Energy System Transformation: The energy system will need to shift from being demand-centric to supply-centric, with more emphasis on flexibility and digital solutions.
• Consumer Behavior: Consumer behavior change is pivotal for decarbonisation. Smart technologies and energy efficiency measures will be central to reducing demand and enabling flexibility.
• Market and Policy Coordination: A balance between policy coordination and competitive markets is needed to drive investment and innovation.
• Infrastructure Investment: Significant investment in grid infrastructure, especially in renewable generation, storage, and hydrogen, is essential for supporting the transition to a low-carbon future.

Future Outlook

• 2050 Energy Flows: The energy system will be largely electrified with hydrogen playing a key role in certain sectors. Natural gas use will be limited, especially in Leading the Way.
• Digital Solutions: Digitalisation and data transparency are critical for managing demand-side flexibility and ensuring system reliability.
• Economic Recovery: As the UK and global economies recover from the pandemic, energy demand is expected to rise, but the long-term impact on emissions is likely to be small.

Conclusion

FES 2021 provides a comprehensive framework for understanding the various pathways to net zero. It highlights the importance of consumer engagement, technological innovation, and market design in achieving a sustainable energy future. The scenarios serve as a guide for policymakers, investors, and energy network operators to make informed decisions and prepare for the challenges and opportunities ahead.