世界银行-释放效率_建筑能源法规及其执行的全球格局（英）-2025_152页_13mb

Summary of "Unlocking Efficiency: The Global Landscape of Building Energy Regulations and Their Enforcement"

Core Content

This report provides a comprehensive analysis of the global status of building energy codes (BECs), their implementation, enforcement, and the gaps that hinder their effectiveness in achieving energy efficiency and sustainable development. It emphasizes the critical role of BECs in shaping long-term energy consumption patterns and their potential to significantly reduce greenhouse gas emissions and operational costs.

Main Objectives

• To assess the global adoption and enforcement of building energy codes.
• To identify key gaps in code coverage, technical requirements, and implementation support.
• To offer strategic recommendations for policymakers to improve energy efficiency in the building sector.

Key Findings

• Global Construction Trends: In 2022-2023, over 2.55 billion square meters of floor space were constructed without mandatory energy efficiency requirements, representing more than 50% of all newly built floor area globally. This is expected to grow significantly by 2050, with 68% of the world's population projected to live in urban areas, leading to unprecedented construction activity.
• Energy Consumption and Emissions: The building sector accounts for 37% of global CO₂ emissions and is a major contributor to energy demand. Without effective energy codes, these emissions could increase dramatically, with new constructions potentially consuming as much energy as the combined current use of the U.S. and EU.
• Code Adoption and Enforcement: 71 countries have adopted mandatory BECs, but only 52 enforce them consistently. Europe shows near-universal adoption, while rapidly urbanizing regions in Africa and South Asia remain largely unregulated.
• Technical Coverage: Space cooling is the most widely regulated aspect, followed by lighting and heating systems. However, retrofitting requirements and fossil fuel phase-out policies are limited, with only 16 countries having established retrofit regulations.
• Enforcement Challenges: Verification systems are weak in many regions, with only 33 out of 88 countries having comprehensive systems for inspector qualification and oversight. Enforcement is often inconsistent and lacks institutional capacity.
• Implementation Strategies: Effective implementation requires context-appropriate strategies. Low-income countries should prioritize low-cost measures like passive design, while more developed economies should focus on expanding technical coverage and retrofitting.
• Market and Policy Support: Financial incentives and technical resources are essential for accelerating market transformation. Successful examples include Berlin’s KfW initiative and Singapore’s Green Mark Incentive Scheme.
• Climate Resilience: Current codes often fail to account for climate resilience, especially in regions facing rising temperatures and increasing cooling demands.

Critical Gaps

• Geographic and Coverage Gaps: Many countries, particularly in Africa and South Asia, lack basic regulatory frameworks for building energy efficiency.
• Technical and Performance Gaps: There is limited coverage for existing buildings, and many codes do not include performance-based standards.
• Economic and Market Infrastructure Gaps: Financial incentives and market readiness are underdeveloped in many regions, hindering the adoption of energy-efficient practices.
• Climate Resilience and Future Readiness Gaps: Building codes are not sufficiently adapted to future climate conditions and cooling challenges.
• Implementation Support Gaps: There is a lack of standardized verification procedures and support mechanisms for market participants.

Recommendations for Policymakers

1. Expand Code Coverage: Focus on regions with limited or no current energy codes, especially in rapidly urbanizing areas of Asia and Africa.
2. Strengthen Enforcement: Develop robust verification systems and clear accountability mechanisms for code enforcement.
3. Address Existing Buildings: Implement retrofitting requirements and performance standards to reduce current energy consumption.
4. Tailor Implementation Strategies: Use context-appropriate approaches based on economic capacity and market readiness.
5. Promote Climate Resilience: Adapt building codes to future climate conditions and cooling demands.
6. Enhance Market Support: Provide financial incentives and technical resources to support the transition to energy-efficient buildings.

Conclusion

Building energy codes are a vital tool for achieving global climate goals and promoting sustainable development. However, their effectiveness depends on consistent enforcement, comprehensive technical requirements, and targeted support mechanisms. The report highlights the urgent need for action to close the gaps in code adoption and implementation, particularly in developing regions, to ensure long-term energy savings and environmental sustainability.