ENERGY EFFICIENCY IN U.S. CONSTRUCTION: A SYSTEMATIC REVIEW AND THEMATIC SYNTHESIS OF GREEN BUILDING TECHNOLOGIES AND PERFORMANCE OUTCOMES
米国建設におけるエネルギー効率：グリーンビルディング技術と性能成果の体系的レビューとテーマ別統合 (AI 翻訳)
Ayotunde Daniel Akindele
🤖 gxceed AI 要約
日本語
本論文は、2011～2025年の米国におけるグリーンビルディング技術に関する22の研究を体系的にレビューし、実測または検証済みのエネルギー性能に焦点を当てた。HVAC制御や外皮改修などのターゲット型技術は確実な削減効果（HVACで57-61%、住宅DERで47%）を示す一方、LEED認証は性能のばらつきが大きく、場合によっては消費量増加を招くことを明らかにした。サブメータリングと試運転の重要性を強調している。
English
This systematic review of 22 U.S. studies on green building technologies (2011-2025) shows that targeted HVAC and envelope retrofits achieve reliable energy savings (57-61% HVAC reduction, 47% whole-home savings), while LEED certification exhibits high performance variability and sometimes higher consumption. The paper emphasizes the need for sub-metering and commissioning over reliance on certification alone.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本でもCASBEEなどの認証制度が普及しているが、本論文は認証だけでは省エネ効果が保証されないことを示しており、日本の建築物省エネ法やZEB（Net Zero Energy Building）推進における実測検証の重要性を示唆する。
In the global GX context
This paper provides strong empirical evidence on the green building certification performance gap, relevant for global policy debates on building decarbonization. It argues that certifications like LEED must incorporate mandatory sub-metering and post-occupancy verification to ensure real energy savings, informing frameworks such as the EU's Energy Performance of Buildings Directive and U.S. building codes.
👥 読者別の含意
🔬研究者:This systematic review synthesizes 22 studies with rigorous methodology, providing a benchmark for future research on building energy performance and certification effectiveness.
🏢実務担当者:Contractors and building owners should prioritize targeted, metered retrofits and commissioning over mere certification to achieve reliable energy savings.
🏛政策担当者:Policymakers should require sub-metering and post-occupancy evaluation for green building certifications to close the performance gap and ensure real decarbonization outcomes.
📄 Abstract（原文）
Background: Buildings account for a high share of U.S. energy use; therefore, the construction industry is a key player in enabling U.S. national decarbonization and grid demand reduction. Objective: This review makes a systematic and thematic synthesis of quantitative evidence regarding the implementation of green building technologies in buildings deployed in the U.S. from 2011-2025, with an emphasis on metered or validated (through simulation) energy performance metrics. Methods: Using a structured process for screening studies, selecting eligible studies, and evaluating design, 22 eligible studies were identified covering U.S. single-family homes, commercial offices, K-12 (including school campus) learning facilities, federal facilities, military bases, and campus case studies. Interventions were grouped either under HVAC/mechanical systems, building envelope retrofits, certification systems impact, renewable integration, and validated energy modelling. Results: HVAC and control system upgrades, including packages validated by Lawrence Berkeley National Laboratory, were proven to have the highest and most consistent HVAC energy reductions (unit level at 57 - 61%). Residential Deep Energy Retrofits, evaluated by Less and Walker (2024), achieved an average net-site energy savings of 47% by making large airtightness improvements. Targeted envelope upgrades (storm windows, interior glazing, internal test surfaces, installation, etc.) were tested in Seattle historical homes and offset 22% of the HVAC load. In contrast, studies that measured LEED certification indicated high levels of predicted vs. actual performance variability, negligible average source-energy savings in federal and Chicago benchmarking cohorts, and, in some instances, 17% higher consumption in LEED-certified schools. Modelling studies by the National Institute of Standards and Technology Net Zero Energy Residential Test Facility confirmed that over-prediction errors as large as 25% were due to occupancy assumptions. Conclusion: Targeted, metered, and commissioned technologies provide the most reliable energy-efficiency payback in high-performance construction in the United States. Certification, in the absence of sub-metering and commissioning, and ongoing validation, merely assures expectations but does not assure results. Keywords: Building Energy Efficiency, HVAC Controls, Retrofitting of Envelope, LEED- Performance Gap, NZEB Validation
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.36713/epra26270first seen 2026-05-15 19:59:15
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