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日経225企業の財務的洪水リスク曝露：産業セクターと地域施設スケールの視点

Financial Flood Risk Exposure of Nikkei 225 Companies: An Industry Sector and Regional Facility-Scale Perspective (原題)

M. Abe, Peter Adriaens

International Journal of Disaster Risk Science📚 査読済 / ジャーナル2026-08-31#気候リスクOrigin: JP経営インパクト: 調達リスク対象セクター: cross_sector
DOI: 10.1007/s13753-026-00758-2
原典: https://link.springer.com/content/pdf/10.1007/s13753-026-00758-2.pdf
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🤖 gxceed AI 要約

日本語

本研究は日経225構成企業の18,000以上の施設を対象に、気候モデルと財務データを統合し、洪水による財務リスクを産業セクター別・地域別に定量化。2030年までに年間期待被害額は82億ドル超と推定され、損失の約60%はアジア施設の物的損害に起因。公益事業やITなど資本集約型セクターで収益比5%超の損失が発生し、TCFD/ISSB開示の実務に示唆を与える。

English

This study quantifies financial flood risk for Nikkei 225 companies across 18,000+ facilities, integrating climate models and financial data. Expected annual damage exceeds USD 8.2 billion by 2030, with ~60% from property damage in Asia. Capital-intensive sectors like utilities and IT face losses exceeding 5% of earnings, offering insights for TCFD/ISSB disclosure.

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

SSBJ開示基準に基づく気候関連リスクの定量化が求められる中、日経225企業の洪水リスクを産業別・地域別に示した実証データは、有報や統合報告書でのリスク開示や投資家対応に有用。日本企業のサプライチェーン全体のリスク評価にも示唆を与える。

In the global GX context

This study provides a methodology for quantifying climate-related financial risks at scale, aligning with TCFD/ISSB disclosure requirements. It offers a benchmark for global investors assessing flood risk in Japanese equities and contributes to the literature on sector-level climate risk assessment.

👥 読者別の含意

🔬研究者:Provides a novel sector-level methodology for quantifying flood risk across a major index, useful for climate risk modeling research.

🏢実務担当者:Corporate sustainability teams can use the sector benchmarks to prioritize facility-level risk assessments and disclosure.

🏛政策担当者:Highlights systemic flood risk in key sectors, informing climate adaptation policy and disclosure guidance.

📄 Abstract（原文）

Publicly listed companies are increasingly disclosing climate-related financial risks to their businesses since the promulgation of the Task Force on Climate-related Financial Disclosures (TCFD), and more recently under the climate-related disclosures issued by the International Sustainability Standards Board (ISSB). Hence, financial risk exposures associated with geographically-distributed operations and business activities will need to be quantified and benchmarked. While extant research on individual companies or facilities has been available, no prior methodologies have explored these systemic risks based on industry sector classification in the context of listed indices. In this study, we analyzed the characteristics of corporate financial flood risks across regions and industry sectors for the constituent components in the Nikkei 225 Index, representing 225 companies and more than 18,000 facilities. The modeling approach integrates hydrological datasets with multiple climate models and financial records of corporations and facilities. Using estimated property damage (using plant, property, and equipment or PP&E investment proxies) and revenue losses at the facility, corporate, and industry scales, the expected annual damage (EAD) exceeds USD 8.2 billion by 2030. Approximately 60% of losses is derived from property damage to Asian-based facilities, while business interruption losses are driven by European and Asian operations. When benchmarked to earnings, several sectors and companies with high capital asset valuations, including utilities, information technology, consumer discretionary, and industrials show loss ranges exceeding 5%. While financial flood risk was not weighted based on index component allocations, sectors with high fixed asset investments and business interruption losses expose the index to significant impact from extreme weather events.

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