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Urban Circular Economy and Energy Efficiency Improvement: Evidence from China’s “Zero-Waste City” Pilot Program

都市循環経済とエネルギー効率改善：中国の「ゼロウェイスト都市」パイロットプログラムからの証拠 (AI 翻訳)

Rui Li, Jiajun Xu

Energies📚 査読済 / ジャーナル2026-05-21#エネルギー転換Origin: CN経営インパクト: コスト削減対象セクター: cross_sector
DOI: 10.3390/en19102470
原典: https://doi.org/10.3390/en19102470

🤖 gxceed AI 要約

日本語

中国の「ゼロウェイスト都市」政策を自然実験とし、2006-2023年の都市パネルデータを用いて、循環経済転換がエネルギー効率を有意に向上させることを実証。資源循環、構造最適化、革新補償の3つのメカニズムを特定し、環境規制が強い都市やAI開発レベルの高い地域で効果が大きいことを示した。

English

Using China's Zero-Waste City policy as a quasi-natural experiment with city-level panel data from 2006-2023, this study employs staggered DID and double machine learning to show that circular economy transformation significantly improves urban energy efficiency. It identifies three mechanisms (resource circulation, structural optimization, innovation compensation) and finds stronger effects in environmentally regulated, large, and AI-developed cities.

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

日本では循環経済と省エネ政策が別々に扱われがちだが、本論文は両者の連携効果を実証。日本の自治体や企業が廃棄物削減とエネルギー効率向上を統合する際の政策的根拠となる。

In the global GX context

This paper provides causal evidence linking circular economy policies to energy efficiency, relevant for global discussions on integrating waste management and energy transition. The use of double machine learning offers a methodological template for evaluating similar policies in other countries.

👥 読者別の含意

🔬研究者:Provides causal evidence and methodological approach (staggered DID + DML) for evaluating circular economy policies' energy impacts.

🏢実務担当者:Highlights potential co-benefits of waste reduction and energy efficiency, useful for corporate sustainability strategy.

🏛政策担当者:Demonstrates that circular economy policies can contribute to energy transition, supporting integrated policy design.

📄 Abstract（原文）

The circular economy offers a key pathway to achieve the joint improvement of resource conservation and carbon reduction, yet its causal effect on urban energy efficiency remains insufficiently examined. This paper takes China’s Zero-Waste City (ZWC) policy as a quasi-natural experiment and uses panel data from prefecture-level cities between 2006 and 2023. By applying staggered difference-in-differences and double machine learning methods, we evaluate the effect of urban circular economy transformation on energy efficiency. The results reveal four main findings: (1) The ZWC policy significantly improves energy efficiency in pilot cities. (2) The policy operates through three mechanisms: resource circulation, structural optimization, and innovation compensation. (3) Policy effects are stronger in environmentally regulated cities, large cities, and regions with higher artificial intelligence development. (4) The policy also generates broader benefits beyond energy savings, including coordinated fiscal, economic, and environmental gains. Overall, this paper highlights the spillover benefits of the circular economy from waste reduction to energy conservation and provides policy implications for coordinating waste management and energy transition at the urban level.

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