ESG不確実性とクリーンエネルギー間の非対称ダイナミクスのマッピング:分位数-ウェーブレットフレームワーク
1Sivas University of Science and Technology, Sivas, Türkiye.
Journal of environmental management
|December 27, 2025
まとめ
持続可能性の不確実性は、ESGベースの持続可能性不確実性指数(ESGUI)によって測定され、クリーンエネルギー市場に大きな影響を与えます。これらの影響は非線形かつ非対称であり、特に市場低迷時にはネガティブであり、投資家の戦略や政策立案に影響を与えます。
科学分野:
- 環境・社会・ガバナンス(ESG)要因
- 金融市場
- クリーンエネルギー経済学
背景:
- 投資決定における持続可能性の重要性の高まり。
- クリーンエネルギー市場におけるボラティリティのドライバーを理解する必要性。
- ESGベースの持続可能性不確実性指数(ESGUI)を新しい指標として使用すること。
研究 の 目的:
- ESGUIが様々なクリーンエネルギー市場指数に与える影響を調査すること。
- これらの影響を異なる分位数と時間スケールで分析すること。
- 持続可能性の不確実性とクリーンエネルギー市場のパフォーマンスの間の動的な関係を明らかにすること。
主な方法:
- 2015年7月31日から2025年6月30日までの月次データを活用しました。
- 分位数間回帰(QQR)、ウェーブレット分位数回帰(WQR)、分位数間グレンジャー因果関係(QQGC)を採用しました。
- 5つの主要なクリーンエネルギー指数(GCEI、KCEI、RENIXX、MSCIGA、MSCIACWI IMI)を分析しました。
主要な成果:
- ESGの不確実性は、クリーンエネルギー市場に対して異種、非線形、非対称な影響を示します。
- 市場低迷時には強いネガティブな影響が観察され、中長期にわたって持続的な影響が見られます。
- ESGの不確実性は予測力を示し、様々な市場状況における投資家の行動を導きます。
結論:
- 持続可能性の不確実性は、クリーンエネルギー市場において重大なリスクと機会をもたらします。
- 調査結果は、投資家のリスク管理と政策立案者によるエネルギー移行加速のための戦略に情報を提供します。
- 本研究は、ESG関連の市場ダイナミクスをナビゲートするための堅牢なフレームワークの必要性を強調しています。
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