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電力部門におけるEU ETS価格シグナル：脱炭素化と政策重複に関する実証

EU ETS Price Signals in the Power Sector: Evidence on Decarbonisation and Policy Overlap (原題)

Giacomo Di Foggia, Massimo Beccarello, Bakary Jammeh

Energies📚 査読済 / ジャーナル2026-09-13#炭素価格Origin: EU経営インパクト: コスト削減対象セクター: power
DOI: 10.3390/en19184333
原典: https://doi.org/10.3390/en19184333

🤖 gxceed AI 要約

日本語

EU ETS価格が再エネ投資を直接促進しているかを、2013〜2024年のパネル計量分析、127社調査、時間別の限界収益推計で検証。補助金や規制安定性が投資判断で優先され、ETSは卸電力価格形成と炭素コスト転嫁を通じた収益再分配として機能していると結論。間接コスト補償の規制炭素係数と市場実測値には大きな国別差がある。

English

Mixed-methods study (panel econometrics 2013-2024, 127-firm survey, hourly inframarginal rent estimation) on whether EU ETS prices drive renewable investment. Subsidies and regulatory stability dominate investor decisions; the ETS mainly transmits wholesale prices and redistributes revenue via carbon cost pass-through. Regulatory carbon factors for indirect cost compensation diverge substantially from observed market pass-through across countries.

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

炭素価格だけでは再エネ投資を駆動しないという知見は、GXリーグ・カーボンプライシング構想や電源投資政策の設計に示唆を与える。補完的支援策と市場設計の重要性は日本でも直接応用可能。

In the global GX context

Directly informs the global debate on carbon pricing efficacy under CBAM and EU ETS reform, showing that cap-and-trade alone is insufficient without complementary support and market design. Relevant to ISSB/TCFD disclosure of carbon cost pass-through and transition finance.

👥 読者別の含意

🔬研究者:炭素価格の投資誘導効果を実証的に分解した手法（パネル＋サーベイ＋限界収益推計）が参考になる。

🏢実務担当者:炭素コスト転嫁と間接コスト補償の国別差を踏まえ、電力調達・投資判断でのETS価格前提を見直す材料になる。

🏛政策担当者:炭素価格単独では不十分で、補助金・規制安定性・市場設計の組合せが再エネ投資に不可欠という政策含意。

📄 Abstract（原文）

Understanding the role of carbon pricing and complementary support schemes in renewable energy deployment is increasingly important for the decarbonisation of power markets. The analysis employs a mixed-methods approach: a panel econometric analysis of installed renewable capacity across European countries from 2013 to 2024, a cross-country survey involving 127 firms, and an hourly market-based estimation of inframarginal rents. Econometric evidence indicates that energy and fuel subsidies consistently drive the expansion of renewable energy capacity. The survey results corroborate that investors prioritise subsidies, regulatory stability, and long-term revenue certainty over the price of EU allowances in renewable energy investment decisions. The market-based analysis demonstrates that the system primarily influences the power sector through wholesale electricity price formation and carbon cost pass-through, thereby generating persistent inframarginal revenues for low-carbon technologies. A comparison between the regulatory carbon factors used for indirect cost compensation and the observed market-based pass-through indicators reveals substantial cross-country differences. The evidence suggests that the system currently functions more as a mechanism for wholesale price transmission and revenue redistribution than as an independent driver of renewable energy investment, underscoring the importance of complementary support policies and electricity market design.

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gxceed は公開メタデータに基づく研究支援データセットです。要約・翻訳・解説は AI 支援で生成されています。 最終的な解釈・検証は利用者が原典資料に基づいて行うことを前提とします。