NDC達成へのエネルギーシステムのボトルネック：OMNIAモデルからの証拠
Energy-system bottlenecks to achieving Nationally Determined Contributions: evidence from the OMNIA model (原題)
Elia, Alessia, Pillon, Tommaso, Pied, Marie, Lubello, Pietro, Price, James, Mittal, Shivika, Al Khourdajie, Alaa, Steve, Pye, Hawkes, Adam, Chiodi, Alessandro, Gargiulo, Maurizio
🤖 gxceed AI 要約
日本語
本論文は、オープンアクセスの世界統合評価モデルOMNIA（TIMESベース、28地域）を用い、各国のNDC排出経路と長期ネットゼロ目標の達成可能性を、エネルギーシステムの構造的特徴から評価する。再生可能資源賦存、需要動向、国際エネルギー貿易への依存という制約を組み込み、電力部門主導（韓国）、導入速度・部門間（米国）、輸出志向の化石燃料生産（カナダ）という3類型のボトルネックを事例で示す。NDCの「実行可能性」が国別の構造条件に強く依存することを明らかにする。
English
Using the open-access OMNIA global integrated assessment model (TIMES-based, 28 regions), this paper assesses the deliverability of national NDC emissions pathways and long-term net-zero goals against structural energy-system constraints. It identifies three recurring bottleneck classes illustrated by case studies: power-sector-dominant transition under constrained renewables (South Korea), adoption-rate and sectoral bottlenecks (US), and export-oriented fossil production weakly coupled to domestic demand (Canada). NDC feasibility depends strongly on country-specific structural conditions.
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
日本も資源制約と電力部門中心の脱炭素という点で韓国型ボトルネックに近く、NDC・長期戦略の実現可能性を構造制約から点検する視点は、日本のエネルギー政策・SSBJ開示における移行計画の説得力評価に示唆を与える。
In the global GX context
As the 2035 NDC round approaches, this work reframes NDC credibility around structural deliverability rather than headline targets—directly relevant to ISSB/transition-plan disclosure debates on whether national and corporate pathways are achievable.
👥 読者別の含意
🔬研究者:統合評価モデルでNDCの実行可能性を構造制約から評価する枠組みと3類型のボトルネック分類を提供する。
🏢実務担当者:自社の移行計画が国別のエネルギー構造制約（再エネ賦存・電力拡張速度）と整合するか点検する材料になる。
🏛政策担当者:NDC目標設定時に、部門別・構造的ボトルネックを踏まえた実現可能な経路設計の必要性を示す。
📄 Abstract（原文）
The 2023 Global Stocktake concluded that current mitigation efforts remain insufficient to keep the Paris Agreement temperature goal within reach, reinforcing the need for accelerated sectoral action. The 2035 round of Nationally Determined Contributions (NDCs) translates these signals into national targets, but their deliverability depends on structural features of each country’s energy system, including renewable resource endowments, demand dynamics, and exposure to international energy trade. These constraints are assessed using the open-access OMNIA global integrated assessment model (TIMES-based), developed under the Horizon Europe DIAMOND project, which represents the global energy system across 28 regions, with, amongst others, South Korea, the United States, and Canada modelled as stand-alone regions. The analysis imposes the NDC emissions trajectories plus long-term strategies net zero objectives at long term, complemented by country-specific constraints reflecting expected 2035 NDCs, and organises results around three recurring bottleneck classes illustrated through national case studies. South Korea exemplifies a power-sector-dominant transition under constrained domestic renewables, where rapid low-carbon capacity expansion must keep pace with accelerating end-use electrification. The United States highlights an adoption-rate and sectoral bottleneck in a large, diverse economy, requiring sustained high deployment rates across multiple sectors and tight synchronisation between power supply expansion and demand-side uptake. Canada illustrates an export-oriented fossil-production bottleneck, where upstream oil and gas, including methane and fugitive emissions, remain only weakly coupled to domestic demand-side mitigation, making targeted upstream regulation and incentives central to NDC deliverability.
🔗 Provenance — このレコードを発見したソース
- Zenodo https://zenodo.org/records/24156858first seen 2026-11-13 04:19:06
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