可再生能源2021—分析和预测至2026-175页_9mb

Summary of "Renewables 2021: Analysis and Forecast to 2026" by the International Energy Agency (IEA)

Core Content

The Renewables 2021 report by the International Energy Agency (IEA) provides a comprehensive analysis of the current state and future outlook of renewable energy technologies in electricity, transport, and heat sectors, with forecasts extending to 2026. It highlights the role of renewables in achieving global net-zero emissions by 2050 and outlines key challenges and opportunities.

Main Points

• Renewable electricity growth is expected to accelerate, driven by improved policies and the COP26 climate goals. In 2021, renewable power capacity additions are forecast to reach 290 GW, with solar PV accounting for over half of the growth.
• Solar PV and wind are the dominant technologies, with solar PV expected to set new records in capacity additions and wind growth outpacing the previous five-year average.
• China leads global renewable capacity expansion, contributing 43% of the total growth from 2021 to 2026, followed by Europe, the United States, and India. These four regions account for 80% of the global renewable capacity additions.
• Asia is set to overtake Europe in biofuel production by 2026, with India and Indonesia leading the charge due to strong domestic policies and growing liquid fuel demand.
• Renewable heat has gained some policy momentum, but its market share is not expected to increase significantly, highlighting the need for more supportive policies to meet climate goals.
• High energy and commodity prices pose challenges, but renewable technologies remain cost-competitive due to their long-term affordability and policy support.
• Government stimulus packages, particularly in the EU, are expected to boost renewable deployment and attract private capital.
• Green hydrogen and energy storage are identified as key trends to watch, with the potential to drive additional renewable capacity and support the integration of intermittent sources.

Key Information

Renewable Electricity

• 2021 Forecast: 290 GW of new renewable power capacity will be added, with solar PV leading the expansion.
• Growth Rate: Solar PV accounts for 60% of all renewable capacity additions, while onshore wind and hydropower follow.
• Cost Competitiveness: Solar PV is the least costly option for new electricity capacity in most countries, especially amid rising fossil fuel prices.
• IEA Net Zero Scenario: Renewable electricity capacity is forecast to grow by over 60% between 2020 and 2026, reaching more than 4,800 GW.
• Policy Impact: Improved policies and corporate power purchase agreements (PPAs) are driving growth, while auction volumes are slightly declining.

Biofuels

• 2021 Recovery: Biofuel demand is expected to surpass 2019 levels, with a 28% increase by 2026 to 186 billion litres.
• Asia's Rise: Asia will overtake Europe in biofuel production by 2026, with strong domestic policies and export-driven growth.
• Fuel Types: Ethanol and renewable diesel are leading the growth, with biojet also showing potential.
• Policy Discussions: Four key policy areas are identified that could help double biofuel growth rates: incentives, regulatory frameworks, sustainability standards, and international cooperation.

Renewable Heat

• Limited Progress: Global renewable heat adoption has been limited, despite policy momentum in Europe.
• Market Share: The market share of renewable heat is not expected to increase significantly, indicating a need for more robust policies.
• Sector Analysis: Renewable heat growth is observed in buildings and industry, with solar thermal and heat pumps playing a role. However, the sector faces challenges in cost and policy support.

Renewable Trends to Watch

• Energy and Commodity Prices: Rising prices are increasing investment costs for solar PV and onshore wind, but the technologies remain competitive.
• Stimulus Packages: Global clean energy stimulus spending, particularly in the EU, is expected to support renewable growth and attract private investment.
• Green Hydrogen: The green hydrogen boom could lead to significant renewable capacity additions by 2026, depending on policy and market developments.
• Energy Storage: The global electricity storage market is forecast to grow rapidly, with technologies like pumped hydro, batteries, and concentrated solar power (CSP) playing a key role.
• Biojet: The conditions for biojet to become a viable alternative to fossil fuels include confidence in the technology, cost competitiveness, supportive policies, production capacity, and feedstock sustainability.
• Residential Heating: Renewable heating options are becoming more cost-competitive with fossil fuels, especially in terms of operating costs and overall lifecycle costs.

Key Challenges

• Policy Ambition: To meet the IEA Net Zero by 2050 scenario, policy makers must significantly increase their ambition for all renewable sectors.
• Market Diversity: While the top-10 countries dominate renewable expansion, more diverse participation is needed to ensure global progress.
• Infrastructure and Integration: Dispatchable renewables like hydropower and bioenergy face slower growth due to higher costs, lack of policy support, and limited remuneration.
• Uncertainties: High commodity and energy prices introduce uncertainties, but the long-term affordability of renewables remains a key advantage.

Conclusion

The report emphasizes that while renewables are making significant strides in electricity and biofuels, challenges remain in heat and dispatchable technologies. Continued policy support, investment in infrastructure, and global cooperation are essential to accelerate renewable deployment and achieve net-zero emissions by 2050.