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Cleaner but Volatile Energy? The Effect of Coal Plant Retirement on Market Competition in the Wholesale Electricity Market

よりクリーンだが変動の大きいエネルギー?卸電力市場における石炭火力発電所の廃止が市場競争に与える影響 (AI 翻訳)

Harim Kim

The RAND Journal of Economics📚 査読済 / ジャーナル2026-06-22#エネルギー転換Origin: US対象セクター: power
DOI: 10.1111/1756-2171.70064
原典: https://doi.org/10.1111/1756-2171.70064

🤖 gxceed AI 要約

日本語

本論文は、石炭からガスへのエネルギー転換が卸電力市場の競争に与える影響を、反実仮想分析を用いて検証する。ガス発電の限界費用の変動性が市場支配力を高める可能性を示す一方、投資企業の特性によって影響が異なり、適切に計画された移行は競争的な産業構造をもたらすと結論付ける。

English

This paper uses counterfactual analysis to study the competitive effects of the coal-to-gas energy transition in wholesale electricity markets. It finds that the volatility of gas generation marginal costs can increase market power, but the impact depends on the type of firms investing; a well-planned transition mitigates adverse effects.

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

日本も石炭からガスへの移行を進めており、電力市場の競争政策とGXの両立が課題。本論文は、転換の進め方次第で市場支配力が変化しうることを示し、日本の卸電力市場設計に示唆を与える。

In the global GX context

As global electricity markets shift from coal to gas, this paper highlights how transition pathways affect competition. It informs regulators and market designers about the risk of increased market power from volatile gas prices and the importance of firm participation.

👥 読者別の含意

🔬研究者:Provides empirical evidence on competition effects of fuel switching using counterfactual analysis.

🏢実務担当者:Utility and power companies may consider implications of new gas investments on market power.

🏛政策担当者:Regulators should design transition policies to mitigate adverse competitive impacts.

📄 Abstract(原文)

ABSTRACT The energy transition from coal to gas is reshaping the power sector to rely more on gas generation, which is cleaner but has more variable input costs. Using counterfactual analysis, I study the competitive effects of this transition, by considering several transition paths that differ in the types of firms involved in retiring coal plants and investing in gas plants. I show that the variable nature of the marginal cost of gas generation creates an environment in which market power could increase after the transition. However, the transition's impact on competition depends on the characteristics of the firms investing in new gas generation; the adverse impact is mitigated under a well‐planned transition that leads to a more competitive industry structure.

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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。