The sufficiency gap: the demand-side deficit in German, Dutch, and Norwegian cement decarbonization roadmaps
十分性のギャップ：ドイツ、オランダ、ノルウェーのセメント脱炭素化ロードマップにおける需要側の欠陥 (AI 翻訳)
Rosalie Arendt, Marc Van Den Berg, Daan Bossuyt, Felice Diekel, Jakob Napiontek, Peter-Paul Pichler, Patricia Schneider-Marin, Tim Verlaan
🤖 gxceed AI 要約
日本語
本研究はドイツ、オランダ、ノルウェーのセメント脱炭素化ロードマップを分析し、需要側の十分性対策（小型住宅、居住スペース分割など）が軽視され、技術的解決策やCCSに過度に依存していることを明らかにした。真のパリ協定準拠には需要側戦略の統合が不可欠である。
English
This study analyzes cement decarbonization roadmaps in Germany, the Netherlands, and Norway, revealing a 'sufficiency gap': roadmaps prioritize technical solutions and carbon capture while neglecting demand-side measures such as reducing housing overconsumption and building smaller. The authors argue for integrating sufficiency strategies to achieve Paris-aligned pathways.
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
日本でもセメント産業の脱炭素化が課題だが、本論文は技術偏重のロードマップに警鐘を鳴らし、需要抑制策の重要性を強調する点で参考になる。日本の住宅政策や建設業界への示唆も含む。
In the global GX context
This paper challenges the dominant narrative in industrial decarbonization that relies heavily on CCS and incremental efficiency, showing that demand-side sufficiency is systematically excluded. It is relevant for global climate policy debates on mitigation pathways and sectoral roadmaps.
👥 読者別の含意
🔬研究者:Climate policy scholars should note the empirical evidence of a sufficiency gap and the proposed mitigation hierarchy for cement.
🏢実務担当者:Cement and construction industry professionals can use the critique to reassess their own decarbonization roadmaps and incorporate demand-side options.
🏛政策担当者:Housing and industrial policy makers should consider sufficiency measures (e.g., building smaller, repurposing) alongside technology to close the gap.
📄 Abstract（原文）
Abstract Cement is an essential building material but producing it generates 7-8% of global CO₂ emissions. Two thirds of these emissions are process-related and cannot be eliminated by switching to clean energy sources. Meeting the Paris Agreement's call for "highest possible mitigation ambition" requires faithful assessment of all mitigation options, including demand-side measures to reduce cement emissions. 
To assess how political actors define and justify their highest possible ambitions for the housing sector, we analyze cement decarbonization roadmaps in Germany, the Netherlands, and Norway: industrialized countries selected for their high floorspace per capita. We identified 30 decarbonization measures using qualitative document analysis. We coded the measures iteratively from roadmaps and literature and categorized them into a cement-specific mitigation hierarchy (Avoid, Reduce, Reuse, Substitute, Minimize, ‘Capture, Store and Recarbonate’) that integrates supply-side decarbonization with demand-side sufficiency in housing.
Our findings expose a persistent sufficiency gap: roadmaps prioritize incremental technical solutions and speculative carbon storage, while neglecting transformative measures that reduce overconsumption like separating spacious living units, building smaller or reducing housing overconsumption. This inflates cement demand, the need for carbon capture and storage as well as associated residual emissions.
We conclude that current mitigation ambitions are not the highest possible but, instead, politically constructed versions that sideline demand-side sufficiency measures. Truly Paris-aligned pathways must first adopt a sectoral perspective to reduce cement emissions and then also integrate demand-side strategies through transdisciplinary collaboration, ensuring a faithful assessment of all mitigation options. 
🔗 Provenance — このレコードを発見したソース
- crossref https://doi.org/10.1088/1748-9326/ae692ffirst seen 2026-05-14 22:16:29
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gxceed は公開メタデータに基づく研究支援データセットです。要約・翻訳・解説は AI 支援で生成されています。 最終的な解釈・検証は利用者が原典資料に基づいて行うことを前提とします。