建筑领域CCER方法学发布，推动建筑节能降碳改造｜CCER方法学解读

Core Viewpoint - The release of the "Methodology for Voluntary Greenhouse Gas Emission Reduction Projects: Energy Efficiency Improvement of Existing Public Building Envelopes and HVAC Systems" aims to accelerate energy-saving and carbon reduction renovations in existing public buildings, which are significant contributors to national energy consumption and carbon emissions [1][2]. Group 1: Current Status and Goals - As of 2023, the total area of existing public buildings in urban China exceeds 16 billion square meters, accounting for 22.5% of the total urban building area [2]. - The "14th Five-Year Plan for Building Energy Conservation and Green Building Development" mandates that by 2025, over 35 million square meters of existing building energy-saving renovations should be completed, with over 25 million square meters (71.4%) being public buildings [2]. Group 2: Challenges and Solutions - Existing public buildings face high energy consumption and carbon emissions, with significant portions being non-energy-efficient [2][3]. - The initial investment for renovations is high, and the payback period is long, which hinders the implementation of systematic energy-saving measures [3][4]. - The methodology aims to provide a framework that encourages owners to undertake energy-saving renovations by reducing economic barriers through a voluntary trading system [4]. Group 3: Technical Aspects - Energy efficiency improvements in building envelopes and HVAC systems can contribute to over 80% of energy savings and carbon reductions in public buildings [5]. - The methodology focuses on enhancing thermal performance of building envelopes and upgrading HVAC systems, which are critical for reducing energy consumption [6][7]. Group 4: Project Application and Benefits - Projects eligible for the methodology must meet specific conditions, including compliance with national standards and regulations, and must not be part of existing carbon trading markets [8][9]. - The expected annual carbon reduction from projects under this methodology is estimated to reach approximately 460,000 tons by 2028, 800,000 tons by 2030, and 1.6 million tons by 2035 [5]. Group 5: Monitoring and Data Quality - Continuous monitoring of energy consumption data for at least 24 months is required to ensure data quality and compliance with the methodology [14]. - The methodology includes provisions for real-time data monitoring and reporting to enhance transparency and accountability in carbon reduction efforts [14].