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排出権取引下における容量報酬メカニズムと再生可能エネルギー基準の比較：電源・蓄電シナジーの役割

Capacity Remuneration Mechanism Versus Renewable Portfolio Standard Under Carbon Emissions Trading: The Role of Source-Storage Synergy (原題)

Yitong Zhao, Wentao Zhan, Sijia Tao, Beile Feng, Peilun Sun, Minghui Jiang

Systems📚 査読済 / ジャーナル2026-09-03#エネルギー転換Origin: CN対象セクター: power
DOI: 10.3390/systems14091086
原典: https://doi.org/10.3390/systems14091086

🤖 gxceed AI 要約

日本語

本論文は、排出権取引（CET）と組み合わせた再生可能エネルギー基準（RPS）と容量報酬メカニズム（CRM）の戦略的等価性を、スタッケルベルク複占モデルを用いて分析する。系統側の蓄電投資を内生化し、電源と蓄電のシナジーをパラメータ化することで、統一的な普及目標に基づく等価マッピングを確立。結果、CRMは技術成熟度に応じて二面的な影響を持ち、未成熟時には投機的過剰投資を招く一方、成熟時には補償予算を効率的に相殺することを示す。また、厳しい脱炭素目標ではCRMがRPSを社会厚生で上回るには高い技術成熟度が必要であり、容量係数の厳格化は物理的導入を変えずに高炭素発電事業者へ富を移転することを明らかにした。

English

This paper analyzes the strategic equivalence of Renewable Portfolio Standards (RPS) and Capacity Remuneration Mechanisms (CRM) combined with carbon emissions trading (CET) using a Stackelberg duopoly model. It endogenizes grid-side storage investment and parameterizes source-storage synergy to establish an equivalence mapping based on a unified penetration target. Results show CRM has dual systemic impacts depending on technological maturity: immature conditions cause speculative over-investment, while mature synergy efficiently offsets public compensation budgets. Stricter decarbonization targets require higher technological readiness for CRM to dominate RPS in social welfare. Stringent capacity derating factors do not alter physical storage deployment but unintentionally transfer wealth to conventional high-carbon generators.

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、容量市場の本格稼働と再生可能エネルギーの大量導入が進む中、本論文の示唆は重要。特に、蓄電技術の成熟度と容量市場の連動や、容量係数の設定が高炭素電源への富の移転を招く可能性は、日本の容量市場設計や長期脱炭素電源オークションに示唆を与える。

In the global GX context

Globally, this paper contributes to the debate on how to design capacity mechanisms alongside carbon pricing to ensure reliability in decarbonized power systems. It highlights the importance of storage maturity and dynamic capacity accreditation, relevant for jurisdictions like the EU and US implementing capacity markets with clean energy standards.

👥 読者別の含意

🔬研究者:Provides a theoretical framework for comparing policy mixes (CET-RPS vs CET-CRM) with storage synergy, useful for energy policy modeling.

🏢実務担当者:Offers insights for utilities and storage developers on how capacity market rules and technology maturity affect investment incentives.

🏛政策担当者:Highlights the need to align capacity market deployment with storage maturity and adopt dynamic capacity accreditation to avoid distortions.

📄 Abstract（原文）

Balancing decarbonization with grid reliability requires managing renewable volatility through Renewable Portfolio Standards (RPSs) or Capacity Remuneration Mechanisms (CRMs) alongside carbon emission trading (CET). However, their comparative systemic impacts remain unclear. This study evaluates the strategic equivalence of CET-RPS and CET-CRM regulations using a Stackelberg duopoly model. We endogenize grid-side storage investment and parameterize source-storage synergy to establish a rigorous equivalence mapping anchored in a unified macroeconomic penetration target. The results reveal that the CRM exhibits dual systemic impacts contingent on technological readiness. Immature conditions necessitate excessive capacity prices, inducing speculative over-investment. Conversely, mature synergy creates a substitution effect that efficiently offsets public compensation budgets. Furthermore, the dynamic policy phase boundary demonstrates that stricter decarbonization targets require higher technological readiness for the CRM to dominate the RPS in social welfare. Additionally, imposing stringent administrative capacity derating factors on storage fails to alter its physical deployment, instead unintentionally transferring wealth to conventional high-carbon generators. Regulators must therefore synchronize capacity market deployment with storage technology maturity and adopt dynamic capacity accreditation to prevent such distributional distortions.

🔗 Provenance — このレコードを発見したソース

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