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企業開示は環境成果を改善するか？EU高汚染産業における非財務開示強化後の証拠とESGの役割

Does Corporate Disclosure Improve Environmental Outcomes? Evidence from EU High-Polluting Industries after a Non-Financial Disclosure Push, and the Role of ESG (原題)

Jianjia Chen

Scientific Journal of Economics and Management Research📚 査読済 / ジャーナル2026-08-25#開示インフラOrigin: EU経営インパクト: 調達リスク対象セクター: cross_sector
DOI: 10.54691/erqthj41
原典: https://doi.org/10.54691/erqthj41
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🤖 gxceed AI 要約

日本語

EUのCSRD導入が高汚染産業の環境パフォーマンスに与えた影響をDIDで検証。ESGスコアは上昇するが、排出原単位や環境スコアの改善は統計的に弱く、開示が実質的な排出削減に結びつくには時間がかかることを示唆。

English

This study uses a difference-in-differences design to evaluate the EU CSRD's impact on high-polluting firms. While ESG scores rose post-reform, emission intensity and environmental scores showed only weak improvements, suggesting disclosure boosts management metrics faster than actual emissions reductions.

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SSBJ開示が始まったばかりで、開示が実質的な環境改善に繋がるまでのタイムラグを示す本結果は、投資家や企業に過度な期待を戒める示唆を与える。また、開示制度設計の評価にも参考になる。

In the global GX context

As the EU CSRD and ISSB standards roll out globally, this paper provides timely evidence that disclosure mandates may improve ESG scores without immediate emissions cuts, informing expectations for policy effectiveness and the need for longer-term evaluation.

👥 読者別の含意

🔬研究者:Provides a DID framework and mediation analysis to assess disclosure policy effectiveness, useful for future research on CSRD and similar regulations.

🏢実務担当者:Highlights that ESG score improvements may not reflect real emissions reductions, cautioning against over-reliance on ratings for sustainability claims.

🏛政策担当者:Suggests that disclosure mandates alone may not quickly reduce emissions, emphasizing the need for complementary policies and longer observation periods.

📄 Abstract（原文）

In November 2022, the EU adopted the Corporate Sustainability Reporting Directive (CSRD) 1. This advanced its sustainability agenda. The directive imposed stricter non-financial reporting mandates on listed firms. This study evaluates real-world efficacy. We study publicly traded companies in high-pollution sectors across the EU. We examine whether mandated transparency translates into actual environmental mitigation. We use a difference-in-differences (DID) design. It helps isolate the policy's impact. Environmental performance is captured through two main variables. First, we calculate greenhouse gas emissions intensity. That is defined as metric tons of carbon dioxide equivalent (tCO₂e) per million Euros of revenue. Second, we rely on a 0–100 environmental score (EnvScore). We also bring ESG ratings into the DID framework. Then we run mediation analyses. For this, we use Bootstrap confidence intervals. Post-reform data shows a clear rise in corporate ESG scores. But tangible environmental outcomes are more complex. We see a downward trend in emission intensity. There are also marginal improvements in EnvScore. Yet these shifts lack strong statistical significance. The weak significance probably comes from the narrow post-policy observation window. Interestingly, the indirect path via ESG is more pronounced among firms with high board gender diversity. Our data points to a pattern. The policy has different timelines for different outcomes. New disclosure rules can boost internal management scores quickly. But cutting actual carbon emissions takes much longer.

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