Integrated energy system framework for policy design, cross-scale energy system models
政策設計のための統合エネルギーシステムフレームワーク：クロススケールエネルギーシステムモデル (AI 翻訳)
Xiao Li
🤖 gxceed AI 要約
日本語
既存の再生可能エネルギー補助金は静的な設備構成を前提とし、インセンティブが電力融通を通じて炭素削減に与える影響を考慮していない。本研究では、長期設備拡張と高解像度の電力融通を内生化した統合最適化フレームワークを開発。中国湖北省の水力主体系統に適用し、代替的な補助金ポートフォリオが2021～2050年の設備拡張と排出に与える影響を気候不確実性下で評価。変動型再生可能エネルギーのみへの補助金は水力投資を抑制し、化石燃料依存を増加させる。水力への補助金を適切にバランスさせることで、年間排出量をほぼゼロに削減可能であり、効果的な脱炭素化には技術横断的な補助金設計が重要であることを示した。
English
Existing renewable subsidies ignore how incentives propagate through dispatch to affect carbon abatement. This paper develops an integrated optimization model that endogenizes subsidy allocation across long-term capacity expansion and high-resolution dispatch. Applied to a hydropower-dominated system in Hubei, China, it shows that subsidies solely for variable renewables suppress hydropower investment and increase fossil fuel reliance. Rebalancing subsidies toward hydropower can reduce annual emissions to near-zero levels, demonstrating the need for coordinated cross-technology subsidy design.
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
日本でも水力は重要な調整電源だが、FIT/FIP制度下での補助金設計が系統全体の炭素削減効果に与える影響は十分に検討されていない。本論文の分析手法は、日本における再生可能エネルギー導入と系統安定性の両立を目指す政策設計に示唆を与える。
In the global GX context
This paper provides quantitative evidence that renewable subsidy design must account for cross-technology and cross-timescale interactions to avoid unintended consequences on emissions. It offers transferable insights for countries with significant hydropower or flexible resources, highlighting the need for coordinated policy frameworks in the global energy transition.
👥 読者別の含意
🔬研究者:An integrated modeling framework that endogenizes subsidy allocation across capacity expansion and dispatch, applicable to other energy systems.
🏢実務担当者:Evidence that unbalanced subsidies for variable renewables alone can undermine hydropower investment and overall decarbonization, informing portfolio design.
🏛政策担当者:Highlights the need for coordinated subsidy policies across renewable technologies to achieve cost-effective emission reductions.
📄 Abstract（原文）
<b>Abstract</b>Existing renewable subsidy schemes are designed against static capacity configurations, without accounting for how incentives propagate through dispatch to deliver carbon abatement. We develop an integrated optimization framework that endogenizes subsidy allocation across long-term capacity expansion and high-resolution dispatch. Applied to a hydropower-dominated system in Hubei Province, China, we evaluate how alternative subsidy portfolios shape capacity expansion and emissions over 2021–2050 under climate uncertainty. Variable-renewable-only subsidies suppress hydropower investment by weakening dispatch-based revenue signals, increasing residual fossil-fuel dependence; rebalancing incentives toward hydropower restores system flexibility and improves carbon abatement. A cost-effective threshold emerges where hydropower subsidies at roughly half the VRE rate reduce annual emissions to near-zero thermal generation levels, beyond which marginal abatement gains diminish. Effective decarbonization requires co-designing renewable incentives across technologies and time scales, providing transferable guidance for hydropower-rich electricity systems.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.6084/m9.figshare.32257656.v1first seen 2026-06-02 04:38:23 · last seen 2026-06-03 04:44:52
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