中国における炭素価格政策の炭素排出削減ポテンシャル
Carbon emissions reduction potential of carbon pricing policies in China (原題)
Fangda Xu, Yun Zhang, Yan Zhang, Tao Ding
🤖 gxceed AI 要約
日本語
中国の電力・熱供給部門を対象に、炭素税と排出量取引制度(ETS)の削減ポテンシャルと効率性をDEAで比較した実証研究。理想化したマスベースETSと炭素税支払いを投入コストとして扱う反事実シミュレーションを実施。ETSは企業間の削減努力再配分により相対的削減ポテンシャルが大きく、炭素税は一律価格シグナルにより技術効率が高いことを示す。両者の補完性から、中国は全国ETSを維持しつつハイブリッド型炭素価格制度を発展させるべきと提言する。
English
This study uses DEA on China's electric and thermal power industry to compare a carbon tax and an ETS in terms of abatement potential and technical efficiency. Modeling the ETS as an idealized mass-based system and treating carbon tax payments as input costs enables a controlled counterfactual. The ETS shows larger relative abatement potential via reallocation among firms, while the carbon tax yields higher technical efficiency through a uniform price signal. The authors recommend China retain its national ETS and develop hybrid carbon pricing.
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
日本でも炭素税(地球温暖化対策税)とGX-ETSの併用が議論されており、炭素税とETSの補完性・効率性の比較は日本の中長期炭素価格設計やGX推進機構の制度設計に直接示唆を与える。
In the global GX context
As jurisdictions worldwide debate carbon tax versus ETS design, this paper offers empirical evidence on their complementary strengths, informing hybrid carbon pricing debates relevant to EU ETS reform and emerging Asian carbon markets.
👥 読者別の含意
🔬研究者:炭素価格制度の削減ポテンシャルと効率性をDEAで反事実比較する手法は、他国・他部門への応用研究の枠組みとして有用。
🏢実務担当者:電力・熱供給企業にとって、炭素税とETSのどちらが自社の削減コスト・効率に有利かを制度設計の観点から理解する材料になる。
🏛政策担当者:炭素税とETSの補完性を示す本知見は、ハイブリッド型炭素価格制度の設計や全国ETSの改善を検討する規制当局にとって参考になる。
📄 Abstract(原文)
The carbon tax and the carbon emissions trading scheme (ETS) are two widely adopted carbon pricing mechanisms for reducing carbon emissions. While China has prioritized the implementation of a national ETS, it remains an open and important empirical question whether a carbon tax or a hybrid policy could offer superior performance in terms of carbon emissions reduction potential and efficiency. This policy comparison constitutes a counterfactual that cannot be directly observed under the current policy pathway. To enable a controlled counterfactual comparison, we model the ETS as an idealized, mass-based system with allowances ex-post equal to actual emissions and treat carbon tax payments as input costs. Using data envelopment analysis (DEA) on China’s electric and thermal power industry, we evaluate the performance of these two policies. Our counterfactual simulations indicate that, under this specific theoretical setup, both policies offer substantial abatement potential. Notably, the relative abatement potential of the ETS is larger, as it allows for reallocating abatement efforts among firms, while the relative technical efficiency of decision-making units (DMUs) is higher under the carbon tax, which imposes a uniform price signal on all emitters. Given these complementary strengths, we suggest China retain the national ETS and develop hybrid carbon pricing to advance carbon neutrality.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.3389/fenvs.2026.1868300first seen 2026-11-12 05:04:29 · last seen 2026-11-13 05:14:57
- semanticscholar https://www.frontiersin.org/journals/environmental-science/articles/10.3389/fenvs.2026.1868300/pdffirst seen 2026-11-12 05:38:16 · last seen 2026-11-13 05:46:23
🔔 こうした論文の新着を逃したくない方は キーワードアラート に登録(無料・3キーワードまで)。
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。