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気候政策統合における制度的圧縮：中国におけるグリーン電力証書と炭素排出権取引の調整

Institutional compression in climate policy integration: coordinating green electricity certificates and carbon emissions trading in China (原題)

Yu Tian, Bangjun Wang

Climate Policy📚 査読済 / ジャーナル2026-08-27#AI×ESGOrigin: CN経営インパクト: 調達リスク対象セクター: power
DOI: 10.1080/14693062.2026.2722557
原典: https://doi.org/10.1080/14693062.2026.2722557

🤖 gxceed AI 要約

日本語

中国のグリーン電力証書（GEC）と炭素排出権取引（CET）の統合を、1,137件の政策文書とBERTopic等のAI手法で分析。2020年のカーボンニュートラル宣言後、中央の政策言説は急速に収束し、二重計上防止などの技術的プロトコルは未整備のまま。省間の伝達にはコア・ペリフェリー格差が残り、ネットワークの相互性や推移的閉包が統合形成に寄与することを示した。EU CBAMへの炭素会計対応や地域差別化された移行計画への示唆を提供。

English

This study analyzes the integration of Green Electricity Certificates (GEC) and Carbon Emissions Trading (CET) in China using AI methods (BERTopic, cosine similarity, Bayesian ERGMs) on 1,137 policy documents. It finds rapid central discourse convergence post-2020, persistent provincial core-periphery gaps, and network dynamics shaping integration. Highlights implications for carbon-accounting readiness under EU CBAM and regionally differentiated transition planning.

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

中国の政策統合の実証分析は、日本のSSBJやカーボンプライシング導入検討に示唆を与える。特に、二重計上防止や省間格差の課題は、日本の地域間調整や排出量取引制度設計に参考となる。AIによる政策文書分析手法は、日本の気候政策評価にも応用可能。

In the global GX context

This paper provides empirical evidence on coordinating market-based climate instruments, relevant to global discussions on policy integration and carbon accounting. The findings on compressed institutional timelines and regional disparities inform CBAM readiness and transition planning, offering lessons for jurisdictions integrating carbon pricing with renewable energy certificates.

👥 読者別の含意

🔬研究者:Provides a novel AI-driven method for analyzing policy integration and empirical evidence on GEC-CET coordination in China.

🏢実務担当者:Offers insights into carbon accounting and policy coordination that could inform corporate strategy in China and under CBAM.

🏛政策担当者:Highlights the importance of technical protocols and regional capacity in integrating climate instruments, relevant for policy design.

📄 Abstract（原文）

Coordinating market-based climate instruments is a central challenge for climate policy, yet the institutional mechanisms through which centralized governance systems pursue such integration remain insufficiently understood. This study examines how China coordinates Green Electricity Certificates (GEC) and Carbon Emissions Trading (CET), two instruments administered by separate bureaucracies. Drawing on 1,137 policy documents from 2017 to 2024 across 29 provinces, we combine BERTopic, cosine similarity analysis, and Bayesian Exponential Random Graph Models to trace central discourse convergence, provincial transmission heterogeneity, and horizontal coordination dynamics. Three findings emerge. First, central policy discourse shows rapid GEC-CET convergence after the 2020 carbon-neutrality pledge, with cross-referenced policy objectives rising from 7.3% to 18.6% within 24 months. This compressed trajectory contrasts with the more incremental development of the EU ETS, while also leaving important technical protocols, including double-counting safeguards, insufficiently specified. Second, provincial transmission exhibits persistent core–periphery gradients within the observation period: eastern provinces show high alignment with central policy discourse, whereas several western and resource-dependent provinces remain lower despite positive growth. Third, network reciprocity and transitive closure are positively associated with the formation of policy-integration ties alongside hierarchical policy-node effects and policy-tool covariates. Instrument associations are context-dependent: economic incentives are more strongly associated with integration in mature market settings, while capacity-building tools are more salient in regions with emerging institutional infrastructure. These findings contribute to climate policy integration research by showing how compressed institutional timelines, uneven local capacity, and horizontal network dynamics jointly shape coordination between market-based climate instruments, while highlighting implications for carbon-accounting readiness under the EU Carbon Border Adjustment Mechanism and regionally differentiated transition planning.

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